I. Data Set Descriptors A. Title: Daniela Di Iorio. 2016. Long-term Hydrographic Mooring Data from the Georgia Coastal Ecosystems LTER Salinity Monitoring Program - Primary 30 Minute Observational Data. Georgia Coastal Ecosystems LTER Data Catalog (data set PHY-GCES-1610; /data/PHY-GCES-1610) B. Accession Number: PHY-GCES-1610 C. Description 1. Originator(s): Name: Daniela Di Iorio Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: daniela@uga.edu 2. Abstract: Conductivity, temperature and sub-surface water pressure were measured continuously at fixed hydrographic moorings distributed across the Georgia Coastal Ecosystems LTER study area to document spatial and temporal variability of salinity and its relationship to water level and river discharge. Mooring locations were chosen to span the salinity gradient as well as to take advantage of existing physical infrastructure (e.g. docks or pilings) for mounting instruments and proximity to marsh study sites. Eight moorings were established between 2001 and 2003 to characterize salinity patterns in the three primary sounds in the GCE domain (Sapelo, Doboy and Altamaha), and a ninth mooring was added near a freshwater tidal forest along the Altamaha River in 2014. Observations were logged at 30 minute intervals by Sea-Bird Electronics MicroCAT 37-SM data loggers and downloaded approximately quarterly. Salinity, depth and sigma-t (density anomaly) were calculated from the measured parameters using standard UNESCO algorithms, and short-duration gaps (<6 hours) due to instrument swaps, quality control analysis or brief data interruptions were filled by interpolation. Long-duration gaps due to instrument or mooring loss were filled with null values to produce a monotonic time series. This data set includes cumulative 30 minute observations at all 9 moorings through 31-Dec-2022, and will be updated annually to include observations from the prior year. 3. Study Type: Synthesis 4. Study Themes: Physical Oceanography 5. LTER Core Areas: Inorganic Matter 6. Georeferences: geographic coordinates as data columns 7. Submission Date: Sep 30, 2016 D. Keywords: conductivity, daily, density, depth, GCE, GCE1, GCE10, GCE11, GCE2, GCE3, GCE6, GCE7, GCE8, GCE9, Georgia, Georgia Coastal Ecosystems, Hydrographic Moorings, hydrography, Inorganic Matter, inorganic nutrients, LTER, monitoring, mooring, pressure, salinity, Sapelo Island, sonde, temperature, USA, water column, water quality II. Research Origin Descriptors A. Overall Project Description 1. Project Title: Georgia Coastal Ecosystems LTER - IV 2. Principal Investigators: Name: Merryl Alber Address: Dept. of Marine Sciences University of Georgia Athens, Georgia 30602-3636 Country: USA Email: malber@uga.edu 3. Funding Period: Feb 01, 2019 to Jan 31, 2025 4. Objectives: The GCE-LTER project has four goals. 1) Track environmental and human drivers that can cause perturbations in our focal ecosystems. This will be accomplished this through continuing long-term measurements of climate, water chemistry, oceanic exchange, and human activities on the landscape. 2) Describe temporal and spatial variability in physical, chemical, geological and biological characteristics of the study system (coastal wetland complexes) and how they respond to external drivers. This will be accomplished through field monitoring in combination with remote sensing and modeling. 3) Characterize the ecological responses of intertidal marshes to disturbance. This will be accomplished by ongoing monitoring and experimental work to evaluate system responses to major perturbations in three key marsh habitats (changes in inundation and predator exclusion in Spartina-dominated salt marshes; increases in salinity in fresh marshes; changes in runoff in high marshes), by implementing standardized experimental disturbances along salinity and elevation gradients, and by tracking responses to natural disturbances. 4) Evaluate ecosystem properties at the landscape level (habitat distribution, net and gross primary production, C budgets) and assess the cumulative effects of disturbance on these properties. The project will also develop relationships between drivers and response variables, which can be used to predict the effects of future changes. This will be accomplished through a combination of data synthesis, remote sensing and modeling. 5. Abstract: The Georgia Coastal Ecosystems (GCE) Long Term Ecological Research (LTER) program, based at the University of Georgia Marine Institute on Sapelo Island, Georgia, was established in 2000 to study long-term change in coastal ecosystems. Estuaries (places where salt water from the ocean mixes with fresh water from the land) and their adjacent marshes provide food and refuge for fish, shellfish and birds; protect the shoreline from storms; help to keep the water clean; and store carbon. The GCE LTER researchers study marshes and estuaries to understand how these ecosystems function, to track how they change over time, and to predict how they might be affected by future changes in climate and human activities. They accomplish this by tracking the major factors that can cause long-term change in coastal areas (e.g. sea level, rainfall, upstream development), and measuring the effects of these factors on the study site. They also conduct focused studies to assess how key marsh habitats will respond to major changes expected in the future, including large-scale experiments to evaluate the effects of a) increases in the salinity of the water that floods freshwater marshes (mimicking drought and/or sea level rise), b) changes in water runoff from land into the upland marsh border (mimicking drought or upland development), and c) exclusion of larger organisms in the salt marsh (mimicking long-term declines in predators). During this award they will initiate additional studies to systematically evaluate how coastal wetlands respond to disturbances. Disturbances, or disruptions in the environment, are particularly important to understand in the context of long-term background changes such as increasing sea level, and GCE researchers are working to assess the cumulative effects of multiple disturbances on the landscape. The GCE education and outreach program works to share an understanding of coastal ecosystems with teachers and students, coastal managers, citizen scientist and the general public. 6. Funding Source: NSF OCE 1832178 B. Sub-project Description 1. Site Description a. Geographic Location: GCE1 -- Eulonia, Georgia, USA GCE2 -- Four Mile Island, Georgia, USA GCE6 -- Dean Creek, Sapelo Island, Georgia, USA GCE7 -- Carrs Island, Georgia, USA GCE8 -- Alligator Creek, Georgia, USA GCE9 -- Rockdedundy Island, Georgia, USA GCE10 -- Hunt Camp, Sapelo Island, Georgia, USA GCE11 -- Tidal Forest, Georgia, USA GCE-SP -- Sapelo River, Georgia, USA GCE-DB -- Doboy Sound, Georgia, USA GCE-AL -- Altamaha River, Georgia, USA GCE-DP -- Duplin River, Georgia, USA GCE1_Hydro -- Eulonia hydrographic datalogger deployment GCE10_Hydro -- Duplin River hydrographic datalogger deployment at Flume Dock GCE11_Hydro -- Lewis Creek hydrographic datalogger deployment GCE2_Hydro -- Four Mile Island hydrographic datalogger deployment GCE3_Hydro -- North Sapelo hydrographic datalogger deployment GCE6_Hydro -- Doboy Sound hydrographic datalogger deployment south of Sapelo Island GCE6_Hydro2 -- Doboy Sound hydrographic datalogger deployment south of Sapelo Island (new piling July 2012) GCE7_Hydro -- Hammersmith Creek hydrographic datalogger deployment GCE8_Hydro -- Alligator Creek hydrographic datalogger deployment GCE9_Hydro -- Altamaha River hydrographic datalogger deployment near Rockdedundy Island Coordinates: GCE1 -- NW: 081 25 42.53 W, 31 32 48.30 N NE: 081 24 38.64 W, 31 32 48.30 N SE: 081 24 38.64 W, 31 32 02.27 N SW: 081 25 42.53 W, 31 32 02.27 N GCE2 -- NW: 081 19 08.26 W, 31 33 09.19 N NE: 081 17 34.24 W, 31 33 09.19 N SE: 081 17 34.24 W, 31 32 00.97 N SW: 081 19 08.26 W, 31 32 00.97 N GCE6 -- NW: 081 17 58.28 W, 31 23 38.66 N NE: 081 15 51.76 W, 31 23 38.66 N SE: 081 15 51.76 W, 31 22 15.61 N SW: 081 17 58.28 W, 31 22 15.61 N GCE7 -- NW: 081 29 36.59 W, 31 20 55.59 N NE: 081 28 33.24 W, 31 20 55.59 N SE: 081 28 33.24 W, 31 20 03.71 N SW: 081 29 36.59 W, 31 20 03.71 N GCE8 -- NW: 081 25 34.58 W, 31 19 04.11 N NE: 081 24 38.28 W, 31 19 04.11 N SE: 081 24 38.28 W, 31 18 14.63 N SW: 081 25 34.58 W, 31 18 14.63 N GCE9 -- NW: 081 20 48.23 W, 31 21 29.31 N NE: 081 19 35.38 W, 31 21 29.31 N SE: 081 19 35.38 W, 31 20 21.02 N SW: 081 20 48.23 W, 31 20 21.02 N GCE10 -- NW: 081 17 43.82 W, 31 29 49.29 N NE: 081 15 32.07 W, 31 29 49.29 N SE: 081 15 32.07 W, 31 27 44.35 N SW: 081 17 43.82 W, 31 27 44.35 N GCE11 -- NW: 081 29 31.88 W, 31 22 44.54 N NE: 081 29 26.62 W, 31 22 44.54 N SE: 081 29 26.62 W, 31 22 37.62 N SW: 081 29 31.88 W, 31 22 37.62 N GCE-SP -- NW: 081 25 55.13 W, 31 33 34.66 N NE: 081 09 14.84 W, 31 33 34.66 N SE: 081 09 14.84 W, 31 30 59.89 N SW: 081 25 55.13 W, 31 30 59.89 N GCE-DB -- NW: 081 22 05.66 W, 31 27 20.39 N NE: 081 14 34.64 W, 31 27 20.39 N SE: 081 14 34.64 W, 31 20 27.39 N SW: 081 22 05.66 W, 31 20 27.39 N GCE-AL -- NW: 081 34 56.32 W, 31 24 05.05 N NE: 081 14 16.57 W, 31 24 05.05 N SE: 081 14 16.57 W, 31 17 45.72 N SW: 081 34 56.32 W, 31 17 45.72 N GCE-DP -- NW: 081 18 07.15 W, 31 29 11.37 N NE: 081 15 47.25 W, 31 29 11.37 N SE: 081 15 47.25 W, 31 24 39.08 N SW: 081 18 07.15 W, 31 24 39.08 N GCE1_Hydro -- 81 25 26.3 W, 31 32 14.9 N GCE10_Hydro -- 81 16 04.5 W, 31 28 56.9 N GCE11_Hydro -- 81 29 34.1 W, 31 22 45.8 N GCE2_Hydro -- 81 19 11.8 W, 31 32 41.8 N GCE3_Hydro -- 81 12 39.0 W, 31 32 53.8 N GCE6_Hydro -- 81 18 17.9 W, 31 23 36.5 N GCE6_Hydro2 -- 81 18 17.7 W, 31 23 36.5 N GCE7_Hydro -- 81 28 31.7 W, 31 20 17.5 N GCE8_Hydro -- 81 24 36.2 W, 31 18 37.0 N GCE9_Hydro -- 81 19 19.1 W, 31 19 12.4 N b. Physiographic Region: GCE1 -- Lower coastal plain GCE2 -- Barrier island GCE6 -- Barrier island GCE7 -- Lower coastal plain GCE8 -- Lower coastal plain GCE9 -- Barrier island GCE10 -- Barrier island GCE11 -- unspecified GCE-SP -- Estuary and tidal marsh GCE-DB -- Estuary and tidal marsh GCE-AL -- Estuary and tidal marsh GCE-DP -- Myxohaline tidal creek and marsh GCE1_Hydro -- Estuary and tidal marsh GCE10_Hydro -- Myxohaline tidal creek and marsh GCE11_Hydro -- Estuary and tidal marsh GCE2_Hydro -- Estuary and tidal marsh GCE3_Hydro -- Estuary and tidal marsh GCE6_Hydro -- Estuary and tidal marsh GCE6_Hydro2 -- Estuary and tidal marsh GCE7_Hydro -- Estuary and tidal marsh GCE8_Hydro -- Estuary and tidal marsh GCE9_Hydro -- Estuary and tidal marsh c. Landform Components: GCE1 -- Intertidal salt marsh bordering maritime forest GCE2 -- Intertidal salt marsh GCE6 -- Intertidal salt marsh, sand beach, maritime forest GCE7 -- Freshwater tidal marsh, devegetated fields GCE8 -- Brackish tidal marsh GCE9 -- Intertidal salt marsh GCE10 -- Intertidal salt marsh bordering maritime forest GCE11 -- unspecified GCE-SP -- Intertidal marsh bordering sounds, tidal channels and creeks GCE-DB -- Intertidal marsh bordering sounds, tidal channels and creeks GCE-AL -- Intertidal marsh bordering sounds, tidal channels and creeks GCE-DP -- Intertidal marsh bordering tidal channels and creeks GCE1_Hydro -- Intertidal marsh bordering sounds, tidal channels and creeks GCE10_Hydro -- Intertidal marsh bordering tidal channels and creeks GCE11_Hydro -- Intertidal marsh bordering sounds, tidal channels and creeks GCE2_Hydro -- Intertidal marsh bordering sounds, tidal channels and creeks GCE3_Hydro -- Intertidal marsh bordering sounds, tidal channels and creeks GCE6_Hydro -- Intertidal marsh bordering sounds, tidal channels and creeks GCE6_Hydro2 -- Intertidal marsh bordering sounds, tidal channels and creeks GCE7_Hydro -- Intertidal marsh bordering sounds, tidal channels and creeks GCE8_Hydro -- Intertidal marsh bordering sounds, tidal channels and creeks GCE9_Hydro -- Intertidal marsh bordering sounds, tidal channels and creeks d. Hydrographic Characteristics: GCE1 -- Site contains the upper reaches of the Sapelo River, and is subject to 2-3m semi-diurnal tides GCE2 -- Site contains the Sapelo River and associated tidal creeks, and is subject to 2-3m semi-diurnal tides GCE6 -- Site contains Dean Creek and borders Doboy Sound, and is subject to 2-3m semi-diurnal tides GCE7 -- Site contains Hammersmith Creek and borders the South Champney River, and is subject to 2-3m semi-diurnal tides GCE8 -- Site contains the Altamaha River, and is subject to 2-3m semi-diurnal tides GCE9 -- Site contains Crooked Creek and borders the Little Mud River, and is subject to 2-3m semi-diurnal tides GCE10 -- Site borders the Mud River and contains tidal creeks and the upper reach of the Duplin River, and is subject to 2-3m semi-diurnal tides GCE11 -- unspecified GCE-SP -- Site includes the Sapelo River and Sapelo Sound, and is subject to 2-3.4m semi-diurnal tides. Sapelo Sound is a lagunal estuary system, with minimal freshwater stream or river input. GCE-DB -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. GCE-AL -- Site encompasses the Altamaha River estuary and nearby tidal creeks, and is subject to 2-3.4m semi-diurnal tides. High freshwater input from the Altamaha River, one of the largest rivers in the Southeastern United States. GCE-DP -- Site includes the Duplin River and various smaller tidal creeks and channels GCE1_Hydro -- Site includes the Sapelo River and Sapelo Sound, and is subject to 2-3.4m semi-diurnal tides. Sapelo Sound is a lagunal estuary system, with minimal freshwater stream or river input. GCE10_Hydro -- Site includes the Duplin River and various smaller tidal creeks and channels GCE11_Hydro -- Site encompasses the Altamaha River estuary and nearby tidal creeks, and is subject to 2-3.4m semi-diurnal tides. High freshwater input from the Altamaha River, one of the largest rivers in the Southeastern United States. GCE2_Hydro -- Site includes the Sapelo River and Sapelo Sound, and is subject to 2-3.4m semi-diurnal tides. Sapelo Sound is a lagunal estuary system, with minimal freshwater stream or river input. GCE3_Hydro -- Site includes the Sapelo River and Sapelo Sound, and is subject to 2-3.4m semi-diurnal tides. Sapelo Sound is a lagunal estuary system, with minimal freshwater stream or river input. GCE6_Hydro -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. GCE6_Hydro2 -- Site encompasses Doboy Sound and nearby tidal channels and creeks, and is subject to 2-3.4m semi-diurnal tides. GCE7_Hydro -- Site encompasses the Altamaha River estuary and nearby tidal creeks, and is subject to 2-3.4m semi-diurnal tides. High freshwater input from the Altamaha River, one of the largest rivers in the Southeastern United States. GCE8_Hydro -- Site encompasses the Altamaha River estuary and nearby tidal creeks, and is subject to 2-3.4m semi-diurnal tides. High freshwater input from the Altamaha River, one of the largest rivers in the Southeastern United States. GCE9_Hydro -- Site encompasses the Altamaha River estuary and nearby tidal creeks, and is subject to 2-3.4m semi-diurnal tides. High freshwater input from the Altamaha River, one of the largest rivers in the Southeastern United States. e. Topographic Attributes: GCE1 -- Flat, with elevations ranging from 0-3m above mean low tide GCE2 -- Flat, with elevations ranging from 0-3m above mean low tide GCE6 -- Flat, with elevations ranging from 0-3m above mean low tide GCE7 -- Flat, with elevations ranging from 0-3m above mean low tide GCE8 -- Flat, with elevations ranging from 0-3m above mean low tide GCE9 -- Flat, with elevations ranging from 0-3m above mean low tide GCE10 -- Flat, with elevations ranging from 0-3m above mean low tide GCE11 -- unspecified GCE-SP -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE-DB -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE-AL -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE-DP -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE1_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE10_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE11_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE2_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE3_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE6_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE6_Hydro2 -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE7_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE8_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide GCE9_Hydro -- Flat, with elevations ranging from 0-3.4m above mean low tide f. Geology, Lithology and Soils: GCE1 -- unspecified GCE2 -- unspecified GCE6 -- unspecified GCE7 -- unspecified GCE8 -- unspecified GCE9 -- unspecified GCE10 -- unspecified GCE11 -- unspecified GCE-SP -- unspecified GCE-DB -- unspecified GCE-AL -- unspecified GCE-DP -- unspecified GCE1_Hydro -- unspecified GCE10_Hydro -- unspecified GCE11_Hydro -- unspecified GCE2_Hydro -- unspecified GCE3_Hydro -- unspecified GCE6_Hydro -- unspecified GCE6_Hydro2 -- unspecified GCE7_Hydro -- unspecified GCE8_Hydro -- unspecified GCE9_Hydro -- unspecified g. Vegetation Communities: GCE1 -- Vegetation is 3/4 Juncus and 1/4 Spartina alterniflora, and upland area is heavily forested. GCE2 -- Spartina alterniflora all tall or medium. GCE6 -- Vegetation is mostly short and tall Spartina alterniflora, with small amounts of Juncus and Borrichia. GCE7 -- dominated by Zizaniopsis GCE8 -- Fringe of tall Spartina alterniflora and S. cynosuroides at creek banks. High marsh has narrow band of medium height S. alterniflora backed by vast expanses of Juncus. GCE9 -- Low marsh is tall Spartina alterniflora, high marsh has a small amount of medium Spartina alterniflora and lots of Juncus. Some hammocks with upland vegetation. GCE10 -- Vegetation mostly tall and medium Spartina alterniflora, with some Juncus present. Upland heavily forested. GCE11 -- unspecified GCE-SP -- unspecified GCE-DB -- unspecified GCE-AL -- unspecified GCE-DP -- unspecified GCE1_Hydro -- unspecified GCE10_Hydro -- unspecified GCE11_Hydro -- unspecified GCE2_Hydro -- unspecified GCE3_Hydro -- unspecified GCE6_Hydro -- unspecified GCE6_Hydro2 -- unspecified GCE7_Hydro -- unspecified GCE8_Hydro -- unspecified GCE9_Hydro -- unspecified h. History of Land Use and Disturbance: none recorded i. Climate: Climate summary for Sapelo Island, Georgia, based on NWS data from 1980-2010: Daily-aggregated Values: Mean (sample standard deviation) mean air temperature: 20.09°C (7.28°C) minimum air temperature: 15.02°C (7.96°C) maximum air temperature: 24.82°C (6.98°C) total precipitation: 3.26mm (10.3mm) Yearly-aggregated Daily Values: Mean (sample standard deviation) total precipitation (1980-2010): 1124mm (266mm) 2. Experimental or Sampling Design a. Design Characteristics: Conductivity, temperature and pressure were continuously monitored using an autonomous data-logging sensor package (sonde) that was moored to a piling and submerged 1-1.5m below mean low water. b. Permanent Plots: none c. Data Collection Duration and Frequency: The MicroCAT was programmed to autonomously measure and log conductivity, temperature and pressure at a sampling rate of 30 minutes (based on its internal chronometer). Upon retrieval the data was downloaded from the instrument via RS-232 serial communications and processed using custom Matlab(r) procedures to calculate depth (i.e. from pressure and latitude), salinity and sigma-t (i.e. from conductivity and temperature), and date and time components from sample time stamps. Beginning of Observations: Aug 08, 2001 End of Observations: Dec 31, 2022 3. Research Methods a. Field and Laboratory Methods: Method 1: Deployment -- MicroCATs were mounted inside protective PVC pipe enclosures and attached to dock structures or wooden pilings (~12 inch diameter) that were driven firmly into the substrate. The enclosures were constructed from a 10-foot lengths of 6-inch (internal diameter) PVC pipe that were perforated all over by drilling 1.5-inch holes at approximately 4-inch spacing to allow water circulation within the enclosure. The bottom of the PVC pipes were submerged about 5 feet below the water surface at low tide and bolted (vertically) to the piling or dock. The MicroCATs were deployed by lowering them into the enclosure on a 0.375-inch stainless steel cable, and bolting the cable to the piling so that the bottom of the data logger was about 3 inches above the bottom of the PVC pipe. A weighted surveyor's tape was then used to measure the distance from the substrate to the pressure sensor on the MicroCAT for calculation of total water column depth from pressure readings. The moorings were inspected every 1-3 weeks, and any visible fouling of the enclosure or MicroCAT was removed with a brush or scaper. Method 2: Retrieval and Calibration -- At the end of each measurement period (approximately 2 months), the MicroCAT was unshackled from the cable and returned to the laboratory. The stored data was uploaded to a computer using a RS-232 serial cable and Sea-Bird Electronics SEATERM software. The MicroCAT was then cleaned to remove encrusting material and calibrated with a reference instrument at 4 to 5 salinity levels, generally ranging from 30 to 5 PSU. Method 3: Data Processing -- Data were processed after each retrieval using custom programs in the GCE Data Toolbox for MATLAB (parse_37sm and imp_gcesonde). Depth was calculated from recorded pressure and latitude values, and salinity and sigma-t were calculated from recorded conductivity and temperature values using standard UNESCO algorithms (reference: Unesco. 1983. Algorithms for computation of fundamental properties of seawater, 1983. Unesco Technical Papers in Marine Science No. 44, 53 pp.). Data were then plotted and visually inspected for evidence of biofouling of the conductivity sensor (i.e. prolonged periods of damped tidal oscillation in conductivity signal with no corresponding changes in temperature signal and no wind or rainfall events recorded at nearby monitoring stations, or periods of damped oscillation immediately followed by normal oscillation after instrument maintenance or replacement). Conductivity values recorded during periods of suspected biofouling were flagged as I (invalid) if visible fouling was noted in maintenance logs, and Q (questionable) if no visible fouling was noted. Method 4: Gap Filling and Data Padding -- Data records were analyzed for time gaps and empty records were inserted as necessary to produce a monotonic 30 minute time series using the GCE Data Toolbox for MATLAB (pad_date_gaps.m). Missing values during short-duration gaps (<6 hours) resulting from instrument swaps, quality control analysis (e.g. removal of data during maintenance events) or short-duration logging failures were then estimated using a shape-preserving interpolation algorithm (i.e. piece-wise cubic hermite method) using the GCE Data Toolbox (interp_missing.m). Gaps longer than 6 hours were not filled for these primary data sets, resulting in missing values (NaN/blank) for all measurements. b. Protocols: Method 1: none Method 2: none Method 3: none Method 4: none c. Instrumentation: Method 1: SBE MicroCAT 37-SM (S/N 2539, with pump) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: May 06, 2021 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Prior to each timed measurement the conductivity cell is opened and water is pumped for 0.5 sec, then conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). The cell is closed between measurements and tributyl tin antifoulant is released into the tubing. Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 3342) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Aug 11, 2020 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Prior to each timed measurement the conductivity cell is opened and water is pumped for 0.5 sec, then conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). The cell is closed between measurements and tributyl tin antifoulant is released into the tubing. Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 13117) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jan 23, 2015 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 13118) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jan 23, 2015 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1667) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Apr 08, 2005 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 16698) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Mar 08, 2018 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 16699) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Aug 11, 2019 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1790) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: May 14, 2021 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1791) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Aug 01, 2020 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1793) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jul 28, 2019 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1794) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jan 24, 2017 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1795) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jun 12, 2015 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1796) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Apr 08, 2005 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1996) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Oct 08, 2004 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 1997) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Dec 06, 2001 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 22299) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jul 28, 2020 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 22300) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jul 16, 2020 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 22301) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jul 16, 2020 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 2398, with pump) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Aug 04, 2020 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Prior to each timed measurement the conductivity cell is opened and water is pumped for 0.5 sec, then conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). The cell is closed between measurements and tributyl tin antifoulant is released into the tubing. Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 24058) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Feb 01, 2022 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 24059) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Feb 01, 2022 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 24060) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Feb 01, 2022 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 2413, with pump) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Aug 04, 2019 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Prior to each timed measurement the conductivity cell is opened and water is pumped for 0.5 sec, then conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). The cell is closed between measurements and tributyl tin antifoulant is released into the tubing. Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 3746) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jan 19, 2020 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Prior to each timed measurement the conductivity cell is opened and water is pumped for 0.5 sec, then conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). The cell is closed between measurements and tributyl tin antifoulant is released into the tubing. Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 4961) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Jan 25, 2020 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 6440) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Aug 20, 2008 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Prior to each timed measurement the conductivity cell is opened and water is pumped for 0.5 sec, then conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). The cell is closed between measurements and tributyl tin antifoulant is released into the tubing. Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). SBE MicroCAT 37-SM (S/N 9960) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Aug 02, 2019 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Water passively circulates through an open internal-field conductivity cell equipped with an external tributyl tin antifoulant dispenser, and conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). Method 2: SBE MicroCAT 37-SM (S/N 2378) Manufacturer: Sea-Bird Electronics (Model: 37-SM MicroCAT) Last Calibration: Feb 14, 2007 Parameter: Conductivity (Accuracy: 0.0003 S/m, Readability: 0.00001 S/m, Range: 0 to 7 S/m) Protocol: Prior to each timed measurement the conductivity cell is opened and water is pumped for 0.5 sec, then conductivity is measured using an ultra-precision Wien-Bridge oscillator with frequency counted by a high-stability reference crystal (<2 ppm/year drift rate). The cell is closed between measurements and tributyl tin antifoulant is released into the tubing. Parameter: Pressure (water) (Accuracy: 0.2m, Readability: 0.0004m, Range: 0 to 20m) Protocol: Pressure is measured using a micro-machined silicon diaphragm with embedded strain elements, and temperature compensation is performed by the SBE MicroCAT onboard cpu. Parameter: Temperature (water) (Accuracy: 0.002°C, Readability: 0.0001°C, Range: -5 to 35°C) Protocol: Temperature is measured by applying an AC excitation to a hermetically-sealed VISHAY reference resistor and an ultra-stable aged thermistor (drift rate typically less than 0.002°C/year). Method 3: none Method 4: none d. Taxonomy and Systematics: Method 1: not applicable Method 2: Method 3: Method 4: not applicable e. Speclies List: f. Permit History: Method 1: none Method 2: none Method 3: none Method 4: not applicable 4. Project Personnel a. Personnel: 1: Daniela Di Iorio 2: Wade M. Sheldon, Jr. 3: Jacob Shalack 4: Adam Sapp b. Affiliations: 1: University of Georgia, Athens, Georgia 2: University of Georgia, Athens, Georgia 3: University of Georgia Marine Institute, Sapelo Island, Georgia 4: University of Georgia, Athens, Georgia III. Data Set Status and Accessibility A. Status 1. Latest Update: 03-Mar-2024 2. Latest Archive Date: 03-Mar-2024 3. Latest Metadata Update: 03-Mar-2024 4. Data Verification Status: Reviewed by GCE-LTER IM B. Accessibility 1. Storage Location and Medium: Stored at GCE-LTER Data Management Office Dept. of Marine Sciences Univ. of Georgia Athens, GA 30602-3636 USA on media: electronic data download (WWW) or compact disk 2. Contact Person: Name: Adam Sapp Address: Department of Marine Sciences University of Georgia Athens, Georgia 30602 Country: USA Email: asapp@uga.edu 3. Copyright Restrictions: not copyrighted 4. Restrictions: This information is licensed under a Creative Commons Attribution 4.0 International License (see: https://creativecommons.org/licenses/by/4.0/). The consumer of these data ("Data User" herein) has an ethical obligation to cite it appropriately in any publication that results from its use. The Data User should realize that these data may be actively used by others for ongoing research and that coordination may be necessary to prevent duplicate publication. The Data User is urged to contact the authors of these data if any questions about methodology or results occur. Where appropriate, the Data User is encouraged to consider collaboration or co-authorship with the authors. The Data User should realize that misinterpretation of data may occur if used out of context of the original study. While substantial efforts are made to ensure the accuracy of data and associated documentation, complete accuracy of data sets cannot be guaranteed. All data are made available "as is." The Data User should be aware, however, that data are updated periodically and it is the responsibility of the Data User to check for new versions of the data. The data authors and the repository where these data were obtained shall not be liable for damages resulting from any use or misinterpretation of the data. a. Release Date: Affiliates: Sep 30, 2016, Public: Sep 30, 2016 b. Citation: Data provided by the Georgia Coastal Ecosystems Long Term Ecological Research Project, supported by funds from NSF OCE 1832178 (data set PHY-GCES-1610) c. Disclaimer: The user assumes all responsibility for errors in judgement based on interpretation of data and analyses presented in this data set. 5. Costs: free electronic data download via WWW, distribution on CD may be subject to nominal processing and handling fee IV. Data Structural Descriptors A. Data Set File 1. File Name: PHY-GCES-1610_GCE3_7_0.CSV 2. Size: 375127 records 3. File Format: ASCII text (comma-separated value format) 3a. Delimiters: single comma 4. Header Information: 5 lines of ASCII text 5. Alphanumeric Attributes: none 6. Quality Control Flag Codes: Q = questionable value, I = invalid value (out of range), S = spike/noise, X = excise row flag, E = data value estimated by interpolation 7. Authentication Procedures: not specified 8. Calculations: Depth(m) = sw_dpth(Pressure(dbar),Latitude(deg)) -- sw_dpth (salt water depth from pressure) Matlab function, Revision: 1.3, Date: 10-Oct-1994 (C)1992 CSIRO, Phil Morgan (morgan@ml.csiro.au) [Salinity(psu),Sigma_t] = salsig2(Depth(m),Temperature(C),Conductivity(mmho/cm)) -- salsig2 (salinity and sigma-t from conductivity, temperature and depth) Matlab function Revision 06-May-1992 by V. Holliday, as modified by Tom Gross and Julie Amft (julie@skio.peachnet.edu) 9. Processing History: Software version: GCE Data Toolbox Version 3.9.10 (23-May-2022) Data structure version: GCE Data Structure 1.1 (29-Mar-2001) Original data files processed: 03011090.asc (3687 records) 03020195.asc (3701 records) 03020396.asc (3071 records) 03020567.asc (2974 records) 03020790.asc (3316 records) 03021095.asc (3399 records) 03030196.asc (4709 records) 03011090.asc (3687 records) 03020195.asc (3701 records) 03020396.asc (3071 records) 03020567.asc (2974 records) 03020790.asc (3316 records) 03021095.asc (3399 records) 03030196.asc (4709 records) 03011090.asc (3687 records) 03020195.asc (3701 records) 03020396.asc (3071 records) 03020567.asc (2974 records) 03020790.asc (3316 records) 03021095.asc (3399 records) 03030196.asc (4709 records) 03030497.asc (4657 records) 03030793.asc (4659 records) 03031195.asc (5179 records) 03040842.asc (5321 records) 03041194.asc (4695 records) 03050396.asc (4403 records) 03050396.asc (4403 records) 03050690.asc (4984 records) 03050842.asc (3733 records) 03051195.asc (4449 records) 03060398.asc (4740 records) 03060398.asc (4740 records) 03060593.asc (3921 records) 03060998.asc (5277 records) 03070196.asc (5418 records) 03070196.asc (5418 records) 03070493.asc (4315 records) 03070794.asc (4359 records) 03071195.asc (5762 records) 03080293.asc (5043 records) 03080293.asc (5043 records) 03080591.asc (4030 records) 03080739.asc (3649 records) 03081142.asc (4744 records) 03090290.asc (5375 records) 03080293.asc (5043 records) 03080591.asc (4030 records) 03080739.asc (3649 records) 03081142.asc (4744 records) 03090290.asc (5375 records) 03090513.asc (4369 records) 03090840.asc (4625 records) 03090840.asc (4625 records) 03091242.asc (4412 records) 03100313.asc (4322 records) 03100313.asc (4322 records) 03100540.cnv (3694 records) 03100894.asc (5074 records) 03101293.asc (4665 records) 03110246.asc (3740 records) 03110246.asc (3740 records) 03110491.asc (2343 records) 03110691.asc (2393 records) 03702539.cnv (4413 records) 03120142.asc (6389 records) 03120142.asc (6389 records) 03120698.asc (7486 records) 03120990.asc (4179 records) 03130142.asc (5173 records) 03130142.asc (5173 records) 03130460.cnv (4642 records) 03130795.asc (5086 records) 03140360.cnv (5898 records) 03140360.cnv (5898 records) 03140761.asc (4799 records) 03140891.asc (2357 records) 03141260.cnv (4076 records) 03140891.asc (2357 records) 03141260.cnv (4076 records) 03150346.asc (5620 records) 03150346.asc (5620 records) 03150861.asc (7208 records) 03151294.asc (5040 records) 03160360.cnv (5127 records) 03150346.asc (5620 records) 03150861.asc (7208 records) 03151294.asc (5040 records) 03160360.cnv (5127 records) 03160839.cnv (7154 records) 03161291.asc (6090 records) 03150346.asc (5620 records) 03150861.asc (7208 records) 03151294.asc (5040 records) 03160360.cnv (5127 records) 03160839.cnv (7154 records) 03161291.asc (6090 records) 03170313.asc (3740 records) 03170313.asc (3740 records) 03170694.asc (5004 records) 03121791.asc (8413 records) 03170313.asc (3740 records) 03170694.asc (5004 records) 03121791.asc (8413 records) 03180361.asc (4617 records) 03180361.asc (4617 records) 03180646.asc (4081 records) 03180999.cnv (4710 records) 03180361.asc (4617 records) 03180646.asc (4081 records) 03180999.cnv (4710 records) 03181290.asc (4006 records) 03190339.cnv (4760 records) 03190339.cnv (4760 records) 03190646.asc (3988 records) 03191090.asc (6165 records) 03200299.cnv (6341 records) 03200299.cnv (6341 records) 03200598.cnv (4170 records) 03200813.asc (4713 records) 03201100.cnv (3915 records) 03200299.cnv (6341 records) 03200598.cnv (4170 records) 03200813.asc (4713 records) 03201100.cnv (3915 records) 03210239.cnv (4753 records) 03210239.cnv (4753 records) 03210560.cnv (3365 records) 032108698.cnv (5196 records) 03211161.asc (4330 records) 03220393.asc (5716 records) 03220393.asc (5716 records) 03220675.cnv (4659 records) 03220900.cnv (4331 records) 03221259.cnv (4181 records) 03230301.cnv (4903 records) Data processing history: 24-Oct-2001: data uploaded from SBE 37-SM MicroCAT using SEATERM software version 1.21 15-Jan-2003: new GCE Data Structure 1.1 created ('newstruct') 15-Jan-2003: data imported from processed SBE SM-37 sonde data file '03011090.asc' (3687 records) ('imp_gcesonde') 15-Jan-2003: updated 25 metadata fields in the Data, Dataset, Site, Status, Study, Supplement sections ('addmeta') 15-Jan-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 15-Jan-2003: 3701 rows added at the bottom of the data set ('datamerge') 15-Jan-2003: updated 11 metadata fields in the Data, Dataset, Status, Study, Supplement sections ('addmeta') 15-Jan-2003: 3071 rows added at the bottom of the data set ('datamerge') 15-Jan-2003: updated 11 metadata fields in the Data, Dataset, Status, Study, Supplement sections ('addmeta') 15-Jan-2003: 2974 rows added at the bottom of the data set ('datamerge') 15-Jan-2003: updated 11 metadata fields in the Data, Dataset, Status, Study, Supplement sections ('addmeta') 15-Jan-2003: 3316 rows added at the bottom of the data set ('datamerge') 15-Jan-2003: updated 11 metadata fields in the Data, Dataset, Status, Study, Supplement sections ('addmeta') 15-Jan-2003: 3399 rows added at the bottom of the data set ('datamerge') 15-Jan-2003: updated 11 metadata fields in the Data, Dataset, Status, Study, Supplement sections ('addmeta') 15-Jan-2003: 4709 rows added at the bottom of the data set ('datamerge') 15-Jan-2003: updated 11 metadata fields in the Data, Dataset, Status, Study, Supplement sections ('addmeta') 15-Jan-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 15-Jan-2003: manually edited data set metadata ('ui_editmetadata') 15-Jan-2003: edited data set title in structure and metadata ('ui_editor') 19-Feb-2003: edited structure data ('ui_datagrid'): deleted record(s) 3687, deleted record(s) 7385, 7386 and 7387, deleted record(s) 10455, deleted record(s) 13428, deleted record(s) 16743, deleted record(s) 20140 and 20141, deleted record(s) 24846, 24847 and 24848 19-Feb-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 19-Feb-2003: updated 2 metadata fields in the Data, Status sections ('addmeta') 19-Feb-2003: QA/QC flags assigned by visual inspection (ui_visualqc); flags set on 2296 records in Conductivity; flags set on Depth record(s): 11368 22-Apr-2003: Q/C flagging criteria of columns Temperature, Pressure, Depth, TotalDepth, Salinity and Sigma_t edited ('ui_editor') 22-Apr-2003: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 29-Jul-2003: deleted the following rows in all columns with values in any column assigned QA/QC flag(s) X (excise flag): 11368, 12040, 14728, 16115, 16742, 17405, 18127, 19386, 21193 and 22502 ('cullflags') 29-Jul-2003: added QA/QC flags from column(s) Conductivity, Temperature and Pressure to flags for column(s) Salinity and Sigma_t, and set QA/QC criteria to 'manual' (copyflags) 29-Jul-2003: query 'Year == 2001' run, returned 6967 of 24835 data rows ('querydata') 29-Jul-2003: automatically assigned study date metadata descriptors based on the range of date values in column Date (add_studydates) 29-Jul-2003: manually edited data set metadata ('ui_editmetadata') 29-Jul-2003: edited data set title in structure and metadata ('ui_editor') 15-Oct-2004: edited units and description for column Date to change 'Julian days' to 'serial day' ('juliandate2serialdate') 24-Jan-2005: updated 2 metadata fields in the Dataset, Status sections ('addmeta') 15-Sep-2005: updated 3 metadata fields in the Status sections ('addmeta') 24-Feb-2006: updated 2 metadata fields in the Dataset, Status sections ('addmeta') 17-Apr-2006: standardized case of date component column units to prevent unit conversion issues ('batch_update_datetime'): updated units for column Year from 'yyyy' to 'YYYY'; updated units for column Month from 'mm' to 'MM'; updated units for column Day from 'dd' to 'DD' 26-Sep-2008: manually edited data set metadata ('ui_editmetadata') 26-Sep-2008: edited data set title in structure and metadata ('ui_editor') 26-Sep-2008: query 'Year = 2001' run, returned 6967 of 6967 data rows ('querydata') 26-Sep-2008: updated title ('newtitle') 26-Sep-2008: updated 2 metadata fields in the Dataset, Status sections ('newtitle') 26-Sep-2008: updated 3 metadata fields in the Status sections ('addmeta') 22-Apr-2011: updated 3 metadata fields in the Status sections ('addmeta') 22-Apr-2011: updated 3 metadata fields in the Status sections ('addmeta') 16-Nov-2011: matched 6967 out of 6967 geographic coordinates in columns Latitude and Longitude to coordinates for registered locations in the file 'geo_locations.mat' within a distance tolerance of 0.5km (add_locations) 16-Nov-2011: added column 'Station' at position 2 ('addcol') 16-Nov-2011: Q/C flagging criteria applied for column(s) Station, 'flags' field updated ('dataflag') 16-Nov-2011: added geographic metadata based on matching values in column Station to location and station names registered in 'geo_locations.mat' ('add_sitemetadata') 16-Nov-2011: updated 9 metadata fields in the Site, Status sections ('add_sitemetadata') 03-Jun-2015: query 'Year=2001' run, returned 6967 of 6967 data rows ('querydata') 03-Jun-2015: copied QA/QC flags from column(s) Conductivity and Temperature to column(s) Salinity and Sigma_t, merging copied flags with any existing flags, and set QA/QC criteria for destination column(s) to 'manual' ('copyflags') 03-Jun-2015: imported all documentation metadata from the template 'GCE_Sonde_GCE1', retaining existing attribute descriptors for all columns ('meta_template') 03-Jun-2015: updated 44 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 03-Jun-2015: updated title ('newtitle') 03-Jun-2015: added geographic metadata based on matching values in column Station to location and station names registered in 'geo_locations.mat' ('add_sitemetadata') 03-Jun-2015: updated 8 metadata fields in the Site sections ('addmeta') 03-Jun-2015: updated title ('newtitle') 03-Jun-2015: updated 1 metadata fields in the Dataset sections ('addmeta') 03-Jun-2015: deleted columns TotalDepth, Calibration and Pump from the structure ('deletecols') 03-Jun-2015: converted values in all columns assigned QA/QC flag(s) I (invalid value (out of range)) to NaN/empty: 2285 records in Conductivity, 2285 records in Salinity, 2285 records in Sigma_t ('nullflags') 29-Sep-2016: locked Q/C flag criteria for columns Site, Station, Longitude, Latitude, Instrument, Date, Year, Month, Day, Hour, Minute, Temperature and Pressure to prevent automatic evaluation ('flag_locks') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 33 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 14864 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 32 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 11529 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 33 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 32 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 33 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17568 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17568 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: 17520 rows added at the bottom of the data set ('datamerge') 29-Sep-2016: updated 41 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 29-Sep-2016: updated title ('newtitle') 29-Sep-2016: updated 1 metadata fields in the Dataset sections ('addmeta') 29-Sep-2016: manually edited data set metadata ('ui_editmetadata') 29-Sep-2016: edited data set title in structure and metadata ('ui_editor') 29-Sep-2016: removed 7414 rows with empty values in columns Temperature, Conductivity, Pressure, Depth, Salinity and Sigma_t ('compactrows') 29-Sep-2016: Revised date/time values that differed from the specified interval of 30 minutes by up to 5 minutes ('adjust_time_interval') 29-Sep-2016: 113 values in 'Date' were updated with new values ('adjust_time_interval') 29-Sep-2016: Q/C flagging criteria applied for column(s) Date, 'flags' field updated ('dataflag') 29-Sep-2016: deleted existing datetime columns Year, Month, Day, Hour and Minute; updated Year, Month, Day, Hour and Minute datetime columns added after column Date ('add_datepartcols') 29-Sep-2016: inserted 16109 new records with date/time values and NaN/null data values (replicating common values in the non-data columns Site, Station, Longitude, Latitude and Instrument) to fill in date/time interval gaps in the data series ('pad_date_gaps') 29-Sep-2016: sorted by column Date(ascending) ('sortdata') 29-Sep-2016: deleted existing datetime columns Year, Month, Day, Hour and Minute; updated Year, Month, Day, Hour and Minute datetime columns added after column Date ('add_datepartcols') 29-Sep-2016: updated 1 metadata fields in the Data sections ('addmeta') 29-Sep-2016: sorted by column Date(ascending) ('sortdata') 29-Sep-2016: replaced 72 missing values in column Temperature with estimated values based on 1D interpolation of Temperature as a function of Date using the MATLAB 9 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 12 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 29-Sep-2016: 72 values in 'Temperature' were updated with new values ('update_data') 29-Sep-2016: Q/C flagging criteria applied for column(s) Temperature, 'flags' field updated ('dataflag') 29-Sep-2016: replaced 78 missing values in column Conductivity with estimated values based on 1D interpolation of Conductivity as a function of Date using the MATLAB 9 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 12 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 29-Sep-2016: 78 values in 'Conductivity' were updated with new values ('update_data') 29-Sep-2016: Q/C flagging criteria applied for column(s) Conductivity, 'flags' field updated ('dataflag') 29-Sep-2016: replaced 69 missing values in column Pressure with estimated values based on 1D interpolation of Pressure as a function of Date using the MATLAB 9 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 12 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 29-Sep-2016: 69 values in 'Pressure' were updated with new values ('update_data') 29-Sep-2016: Q/C flagging criteria applied for column(s) Pressure, 'flags' field updated ('dataflag') 29-Sep-2016: replaced 73 missing values in column Depth with estimated values based on 1D interpolation of Depth as a function of Date using the MATLAB 9 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 12 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 29-Sep-2016: 73 values in 'Depth' were updated with new values ('update_data') 29-Sep-2016: Q/C flagging criteria applied for column(s) Depth, 'flags' field updated ('dataflag') 29-Sep-2016: replaced 78 missing values in column Salinity with estimated values based on 1D interpolation of Salinity as a function of Date using the MATLAB 9 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 12 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 29-Sep-2016: 78 values in 'Salinity' were updated with new values ('update_data') 29-Sep-2016: Q/C flagging criteria applied for column(s) Salinity, 'flags' field updated ('dataflag') 29-Sep-2016: replaced 78 missing values in column Sigma_t with estimated values based on 1D interpolation of Sigma_t as a function of Date using the MATLAB 9 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 12 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 29-Sep-2016: 78 values in 'Sigma_t' were updated with new values ('update_data') 29-Sep-2016: Q/C flagging criteria applied for column(s) Sigma_t, 'flags' field updated ('dataflag') 30-Sep-2016: updated 1 metadata fields in the Dataset sections ('addmeta') 30-Sep-2016: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 30-Sep-2016: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 30-Sep-2016: manually edited data set metadata ('ui_editmetadata') 30-Sep-2016: edited data set title in structure and metadata ('ui_editor') 30-Sep-2016: Q/C flagging criteria applied for column(s) Site, Station, Longitude, Latitude, Instrument and Date, 'flags' field updated ('dataflag') 30-Sep-2016: documented flagged and missing values in columns Temperature, Conductivity, Pressure, Depth, Salinity and Sigma_t as data set anomalies in the metadata ('add_anomalies') 30-Sep-2016: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 06-Oct-2016: replaced missing values in column(s) Longitude with values calculated from the MATLAB expression '-81.211200' ('calc_missing_vals') 06-Oct-2016: locked Q/C flag criteria for column Longitude to prevent automatic evaluation ('flag_locks') 06-Oct-2016: 8695 values in 'Longitude' were updated with new values ('update_data') 06-Oct-2016: Q/C flagging criteria applied for column(s) Longitude, 'flags' field updated ('dataflag') 06-Oct-2016: replaced missing values in column(s) Latitude with values calculated from the MATLAB expression '31.548100' ('calc_missing_vals') 06-Oct-2016: locked Q/C flag criteria for column Latitude to prevent automatic evaluation ('flag_locks') 06-Oct-2016: 8695 values in 'Latitude' were updated with new values ('update_data') 06-Oct-2016: Q/C flagging criteria applied for column(s) Latitude, 'flags' field updated ('dataflag') 15-Feb-2017: 17065 rows added at the bottom of the data set ('datamerge') 15-Feb-2017: updated 48 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 15-Feb-2017: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 15-Feb-2017: manually edited data set metadata ('ui_editmetadata') 15-Feb-2017: edited data set title in structure and metadata ('ui_editor') 15-Feb-2017: imported all documentation metadata from another data structure, retaining existing attribute descriptors for all columns ('meta_template') 15-Feb-2017: updated 70 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 15-Feb-2017: updated title ('newtitle') 15-Feb-2017: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 15-Feb-2017: added geographic metadata based on matching values in columns Site and Station to site and transect names registered in 'geo_polygons.mat' and location and station names registered in 'geo_locations.mat' ('add_sitemetadata') 15-Feb-2017: updated 8 metadata fields in the Site sections ('addmeta') 15-Feb-2018: query 'Date<736330.00000' run, returned 252391 of 269456 data rows ('querydata') 15-Feb-2018: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 15-Feb-2018: 17568 rows added at the bottom of the data set ('datamerge') 15-Feb-2018: updated 48 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 15-Feb-2018: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 15-Feb-2018: 16644 rows added at the bottom of the data set ('datamerge') 15-Feb-2018: updated 49 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 15-Feb-2018: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 15-Feb-2018: manually edited data set metadata ('ui_editmetadata') 15-Feb-2018: edited data set title in structure and metadata ('ui_editor') 15-Feb-2018: updated 1 metadata fields in the Data sections ('addmeta') 15-Feb-2018: sorted by column Date(ascending) ('sortdata') 15-Feb-2018: replaced 148 missing values in column Temperature with estimated values based on 1D interpolation of Temperature as a function of Date using the MATLAB 9.3 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 30 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 15-Feb-2018: 148 values in 'Temperature' were updated with new values ('update_data') 15-Feb-2018: Q/C flagging criteria applied for column(s) Temperature, 'flags' field updated ('dataflag') 15-Feb-2018: replaced 148 missing values in column Conductivity with estimated values based on 1D interpolation of Conductivity as a function of Date using the MATLAB 9.3 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 30 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 15-Feb-2018: 148 values in 'Conductivity' were updated with new values ('update_data') 15-Feb-2018: Q/C flagging criteria applied for column(s) Conductivity, 'flags' field updated ('dataflag') 15-Feb-2018: replaced 148 missing values in column Pressure with estimated values based on 1D interpolation of Pressure as a function of Date using the MATLAB 9.3 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 30 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 15-Feb-2018: 148 values in 'Pressure' were updated with new values ('update_data') 15-Feb-2018: Q/C flagging criteria applied for column(s) Pressure, 'flags' field updated ('dataflag') 15-Feb-2018: replaced 148 missing values in column Depth with estimated values based on 1D interpolation of Depth as a function of Date using the MATLAB 9.3 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 30 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 15-Feb-2018: 148 values in 'Depth' were updated with new values ('update_data') 15-Feb-2018: Q/C flagging criteria applied for column(s) Depth, 'flags' field updated ('dataflag') 15-Feb-2018: replaced 148 missing values in column Salinity with estimated values based on 1D interpolation of Salinity as a function of Date using the MATLAB 9.3 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 30 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 15-Feb-2018: 148 values in 'Salinity' were updated with new values ('update_data') 15-Feb-2018: Q/C flagging criteria applied for column(s) Salinity, 'flags' field updated ('dataflag') 15-Feb-2018: replaced 148 missing values in column Sigma_t with estimated values based on 1D interpolation of Sigma_t as a function of Date using the MATLAB 9.3 function 'interp1' with the 'pchip' (piecewise cubic Hermite interpolation) method option, excluding data gaps with more than 30 consecutive missing values, and flagging the estimated values as 'E' ('interp_missing') 15-Feb-2018: 148 values in 'Sigma_t' were updated with new values ('update_data') 15-Feb-2018: Q/C flagging criteria applied for column(s) Sigma_t, 'flags' field updated ('dataflag') 15-Feb-2018: documented flagged and missing values in columns Temperature, Conductivity, Pressure, Depth, Salinity and Sigma_t as data set anomalies in the metadata ('add_anomalies') 16-Feb-2018: manually edited data set metadata ('ui_editmetadata') 23-Oct-2018: 876 rows added at the bottom of the data set from 'Continuous salinity, temperature and depth measurements from moored hydrographic data loggers deployed at GCE3_Hydro (Sapelo Sound north of Sapelo Island, Georgia) from 01-Jan-2017 through 31-Dec-2017' ('datamerge') 23-Oct-2018: updated 66 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 23-Oct-2018: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 23-Oct-2018: 12507 rows added at the bottom of the data set from 'Continuous salinity, temperature and depth measurements from moored hydrographic data loggers deployed at GCE3_Hydro (Sapelo Sound north of Sapelo Island, Georgia) from 01-Jan-2018 through 18-Sep-2018' ('datamerge') 23-Oct-2018: updated 66 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 23-Oct-2018: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 23-Oct-2018: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 23-Oct-2018: updated title ('newtitle') 23-Oct-2018: updated 1 metadata fields in the Dataset sections ('addmeta') 23-Oct-2018: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 23-Oct-2018: updated title ('newtitle') 23-Oct-2018: updated 1 metadata fields in the Dataset sections ('addmeta') 05-Dec-2020: 5013 rows added at the bottom of the data set from 'Data from Sea-Bird Electronics 37-SM MicroCAT sonde deployed at GCE3_Hydro (North Sapelo hydrographic datalogger deployment) from 01-Jan-2018 to 31-Dec-2018' ('datamerge') 05-Dec-2020: updated 40 metadata fields in the Data, Dataset, Site, Status, Study, Supplement sections ('addmeta') 05-Dec-2020: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 05-Dec-2020: 17520 rows added at the bottom of the data set from 'Data from Sea-Bird Electronics 37-SM MicroCAT sonde S/N 2539 deployed at GCE3_Hydro (North Sapelo hydrographic datalogger deployment) from 01-Jan-2019 to 31-Dec-2019' ('datamerge') 05-Dec-2020: updated 40 metadata fields in the Data, Dataset, Site, Status, Study, Supplement sections ('addmeta') 05-Dec-2020: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 05-Dec-2020: 15402 rows added at the bottom of the data set from 'Data from Sea-Bird Electronics 37-SM MicroCAT sonde S/N 16699 deployed at GCE3_Hydro (North Sapelo hydrographic datalogger deployment) from 01-Jan-2020 to 17-Nov-2020' ('datamerge') 05-Dec-2020: updated 46 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 05-Dec-2020: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 05-Dec-2020: manually edited data set metadata ('ui_editmetadata') 05-Dec-2020: edited data set title in structure and metadata ('ui_editor') 05-Mar-2021: 2166 rows added at the bottom of the data set from 'Data from Sea-Bird Electronics 37-SM MicroCAT sonde S/N 16699 deployed at GCE3_Hydro (North Sapelo hydrographic datalogger deployment) from 01-Jan-2020 to 31-Dec-2020' ('datamerge') 05-Mar-2021: updated 66 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement sections ('addmeta') 05-Mar-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 05-Mar-2021: updated title ('newtitle') 05-Mar-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 05-Mar-2021: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 05-Mar-2021: updated title ('newtitle') 05-Mar-2021: updated 1 metadata fields in the Dataset sections ('addmeta') 01-Aug-2023: 17520 rows added at the bottom of the data set from 'Data from Sea-Bird Electronics 37-SM MicroCAT sonde S/N 2539 deployed at GCE3_Hydro (North Sapelo hydrographic datalogger deployment) from 01-Jan-2021 to 31-Dec-2021' ('datamerge') 01-Aug-2023: updated 66 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 01-Aug-2023: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 01-Aug-2023: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 01-Aug-2023: 17520 rows added at the bottom of the data set from 'Data from Sea-Bird Electronics 37-SM MicroCAT sonde S/N 1793 deployed at GCE3_Hydro (North Sapelo hydrographic datalogger deployment) from 01-Jan-2022 to 31-Dec-2022' ('datamerge') 01-Aug-2023: updated 66 metadata fields in the Data, Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 01-Aug-2023: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 01-Aug-2023: automatically assigned study date metadata descriptors based on the range of date values in date/time columns (add_studydates) 01-Aug-2023: updated title ('newtitle') 01-Aug-2023: updated 1 metadata fields in the Dataset section(s) ('addmeta') 01-Aug-2023: Q/C flagging criteria applied, 'flags' field updated ('dataflag') 01-Aug-2023: updated title ('newtitle') 01-Aug-2023: updated 1 metadata fields in the Dataset section(s) ('addmeta') 03-Mar-2024: updated 1 metadata fields in the Dataset section(s) ('addmeta') 03-Mar-2024: imported Dataset, Project, Site, Study, Status, Supplement metadata descriptors from the GCE Metabase ('imp_gcemetadata') 03-Mar-2024: updated 57 metadata fields in the Dataset, Project, Site, Status, Study, Supplement section(s) ('addmeta') 03-Mar-2024: converted dates in column(s) Date to format yyyy-mm-dd HH:MM:SS 03-Mar-2024: flags for columns Temperature, Conductivity, Pressure, Depth, Salinity and Sigma_t converted to data columns, flag codes updated in metadata ('flags2cols') 03-Mar-2024: updated 6 metadata fields in the Data section(s) ('addmeta') 03-Mar-2024: updated 15 metadata fields in the Status, Data sections to reflect attribute metadata ('updatecols') 03-Mar-2024: parsed and formatted metadata ('listmeta') B. Variable Information 1. Variable Name: column 1. Site column 2. Station column 3. Longitude column 4. Latitude column 5. Instrument column 6. Date column 7. Year column 8. Month column 9. Day column 10. Hour column 11. Minute column 12. Temperature column 13. Flag_Temperature column 14. Conductivity column 15. Flag_Conductivity column 16. Pressure column 17. Flag_Pressure column 18. Depth column 19. Flag_Depth column 20. Salinity column 21. Flag_Salinity column 22. Sigma_t column 23. Flag_Sigma_t column 24. Calibration column 25. Pump 2. Variable Definition: column 1. Nearest nominal GCE-LTER sampling site column 2. Station determined by geographic lookup of coordinates in reference file 'geo_locations.mat' using a distance tolerance of 0.5km column 3. Geographic longitude in decimal degrees column 4. Geographic latitude in decimal degrees column 5. Serial number of the SBE 37-SM MicroCAT instrument used for the observations column 6. Calendar date and time of observation column 7. Calendar year column 8. Calendar month column 9. Calendar day column 10. Hours - GMT column 11. Minutes column 12. Water temperature column 13. QA/QC flags for Water temperature (flagging criteria, where "x" is Temperature: x<0="Q", x>35="Q", Depth<0.2="Q", flag_valuechange(x,5,5,3)="S", manual) column 14. Conductivity column 15. QA/QC flags for Conductivity (flagging criteria, where "x" is Conductivity: manual) column 16. Water pressure at sensor (approximately equivalent to water depth within 3% error) column 17. QA/QC flags for Water pressure at sensor (approximately equivalent to water depth within 3% error) (flagging criteria, where "x" is Pressure: x<0.2="Q", x>10="Q", manual) column 18. Water depth to the pressure sensor of the moored sonde column 19. QA/QC flags for Water depth to the pressure sensor of the moored sonde (flagging criteria, where "x" is Depth: x<0.2="Q", x>10="Q", manual) column 20. Salinity column 21. QA/QC flags for Salinity (flagging criteria, where "x" is Salinity: x<0="I", x>36="Q", Depth<0.2="Q", flag_valuechange(x,10,0,3)="S", manual) column 22. Sigma-t (i.e. Density-1) column 23. QA/QC flags for Sigma-t (i.e. Density-1) (flagging criteria, where "x" is Sigma_t: x<-5="Q", Depth<0.2="Q", x>28="Q", manual) column 24. Boolean value indicating whether data represents a calibration check (0 = false, 1 = true) column 25. Boolean value indicating whether conductivity was measured using a pumped cell (1=true/0=false) 3. Units of Measurement: column 1. none column 2. none column 3. degrees column 4. degrees column 5. none column 6. yyyy-mm-dd HH:MM:SS - GMT column 7. YYYY column 8. MM column 9. DD column 10. hr column 11. min column 12. °C column 13. none column 14. S/m column 15. none column 16. dbar column 17. none column 18. m column 19. none column 20. PSU column 21. none column 22. kg/m^3 column 23. none column 24. none column 25. none 4. Data Type a. Storage Type: column 1. integer column 2. string column 3. floating-point column 4. floating-point column 5. integer column 6. string column 7. integer column 8. integer column 9. integer column 10. integer column 11. integer column 12. floating-point column 13. string column 14. floating-point column 15. string column 16. floating-point column 17. string column 18. floating-point column 19. string column 20. floating-point column 21. string column 22. floating-point column 23. string column 24. integer column 25. integer b. Variable Codes: Flag_Temperature: E = data value estimated by interpolation, Q = questionable value Flag_Conductivity: E = data value estimated by interpolation, I = invalid value (out of range), Q = questionable value Flag_Pressure: E = data value estimated by interpolation, Q = questionable value Flag_Depth: E = data value estimated by interpolation Flag_Salinity: E = data value estimated by interpolation, I = invalid value (out of range), Q = questionable value Flag_Sigma_t: E = data value estimated by interpolation, I = invalid value (out of range), Q = questionable value c. Numeric Range: column 1. 3 to 3 column 2. (none) column 3. -81.2112 to -81.2108 column 4. 31.5481 to 31.5483 column 5. 1667 to 24075 column 6. (none) column 7. 2001 to 2022 column 8. 1 to 12 column 9. 1 to 31 column 10. 0 to 23 column 11. 0 to 30 column 12. 4.653 to 32.5997 column 13. (none) column 14. 1.7557 to 6.0865 column 15. (none) column 16. -0.012 to 5.623 column 17. (none) column 18. 0.05164 to 5.584 column 19. (none) column 20. 13.8165 to 36.9047 column 21. (none) column 22. 8.4556 to 26.6971 column 23. (none) column 24. 0 to 0 column 25. 0 to 0 d. Missing Value Code: 5. Data Format a. Column Type: column 1. numerical column 2. text column 3. numerical column 4. numerical column 5. numerical column 6. text column 7. numerical column 8. numerical column 9. numerical column 10. numerical column 11. numerical column 12. numerical column 13. text column 14. numerical column 15. text column 16. numerical column 17. text column 18. numerical column 19. text column 20. numerical column 21. text column 22. numerical column 23. text column 24. numerical column 25. numerical b. Number of Columns: 25 c. Decimal Places: column 1. 0 column 2. 0 column 3. 6 column 4. 6 column 5. 0 column 6. 0 column 7. 0 column 8. 0 column 9. 0 column 10. 0 column 11. 0 column 12. 3 column 13. 0 column 14. 3 column 15. 0 column 16. 3 column 17. 0 column 18. 3 column 19. 0 column 20. 3 column 21. 0 column 22. 3 column 23. 0 column 24. 0 column 25. 0 6. Logical Variable Type: column 1. nominal (discrete) column 2. nominal (none) column 3. geographic coordinate (continuous) column 4. geographic coordinate (continuous) column 5. nominal (discrete) column 6. datetime (none) column 7. datetime (discrete) column 8. datetime (discrete) column 9. datetime (discrete) column 10. datetime (discrete) column 11. datetime (discrete) column 12. data (continuous) column 13. coded value (none) column 14. data (continuous) column 15. coded value (none) column 16. data (continuous) column 17. coded value (none) column 18. calculation (continuous) column 19. coded value (none) column 20. calculation (continuous) column 21. coded value (none) column 22. calculation (continuous) column 23. coded value (none) column 24. logical (discrete) column 25. logical (discrete) 7. Flagging Criteria: column 1. none column 2. flag_locationcoords(x,col_Longitude,col_Latitude,0.25,"sensitive","geo_locations.mat")=" Q" column 3. x<-180="Q";x>180="Q";manually-assigned flags column 4. x<-90="Q";x>90="Q";manually-assigned flags column 5. none column 6. none column 7. none column 8. x<1="I";x>12="I" column 9. x<1="I";x>31="I" column 10. x<0="I";x>24="I" column 11. x<0="I";x>60="I" column 12. x<0="Q";x>35="Q";col_Depth<0.2="Q";flag_valuechange(x,5,5,3)="S";manually-assigned flags column 13. none column 14. manually-assigned flags column 15. none column 16. x<0.2="Q";x>10="Q";manually-assigned flags column 17. none column 18. x<0.2="Q";x>10="Q";manually-assigned flags column 19. none column 20. x<0="I";x>36="Q";col_Depth<0.2="Q";flag_valuechange(x,10,0,3)="S";manually-assigned flags column 21. none column 22. x<-5="Q";col_Depth<0.2="Q";x>28="Q";manually-assigned flags column 23. none column 24. x<0="I";x>1="I" column 25. x<0="I";x>1="I" C. Data Anomalies: Values of 3377 records in Temperature were flagged as E (data value estimated by interpolation) for dates: 03/14/2002-05/15/2002, 06/11/2002, 07/10/2002, 07/23/2002, 08/06/2002, 08/21/2002, 09/16/2002, 10/02/2002, 10/24/2002, 11/20/2002, 01/08/2003, 04/01/2003, 04/15/2003, 07/21/2003, 08/10/2004, 08/23/2004, 10/18/2004, 11/03/2004, 11/29/2004, 06/13/2005, 07/19/2005, 08/03/2005, 08/30/2005, 09/26/2005, 03/10/2006, 05/31/2006, 07/10/2006, 08/09/2006, 08/28/2006, 09/18/2006, 10/02/2006, 10/31/2006, 11/13/2006, 01/09/2007, 04/09/2007, 06/06/2007, 07/09/2007, 08/29/2007, 09/19/2007, 10/05/2007, 11/06/2007, 11/27/2007, 12/12/2007, 01/17/2008, 02/07/2008, 02/19/2008, 05/13/2008, 06/27/2008, 07/18/2008, 07/28/2008, 09/11/2008, 09/29/2008, 11/04/2008, 01/09/2009, 02/24/2009, 03/25/2009, 04/14/2009, 05/26/2009, 05/31/2009, 06/05/2009, 06/09/2009, 06/14/2009, 06/18/2009, 06/23/2009, 06/25/2009, 06/27/2009, 07/02/2009, 07/07/2009, 07/11/2009, 07/14/2009, 07/16/2009, 07/20/2009, 07/25/2009, 07/30/2009, 08/03/2009, 08/08/2009, 08/12/2009, 08/17/2009, 08/21/2009, 08/26/2009, 08/31/2009, 09/16/2009, 11/18/2009, 12/01/2009, 03/01/2010, 04/02/2010, 04/18/2010, 04/23/2010, 05/17/2010, 08/31/2010, 09/28/2010, 10/19/2010, 12/06/2010, 02/22/2011, 06/07/2011, 08/29/2011, 09/07/2011, 01/18/2012, 04/13/2012, 06/22/2012, 09/17/2012, 01/02/2013, 01/22/2013, 04/08/2013, 04/23/2013, 02/03/2014, 03/25/2014, 07/03/2014, 09/19/2014, 11/07/2014, 12/03/2014, 12/19/2014, 05/04/2015, 07/02/2015, 07/29/2015, 12/07/2015. Values of 7 records in Temperature were flagged as Q (questionable value) for dates: 05/14/2003, 06/09/2003, 07/08/2003, 06/25/2009, 09/28/2010, 03/30/2015, 12/22/2016. Values of 15995 records in Temperature are missing for dates: 11/06/2003-05/05/2004, 02/28/2005-03/01/2005, 11/30/2005-12/01/2005, 04/12/2011-04/18/2011, 07/23/2013-11/22/2013, 08/21/2014-09/09/2014, 09/28/2016-09/29/2016, 12/21/2016-12/22/2016. Values of 3376 records in Conductivity were flagged as E (data value estimated by interpolation) for dates: 03/14/2002-05/15/2002, 06/11/2002, 07/10/2002, 07/23/2002, 08/06/2002, 08/21/2002, 09/16/2002, 10/02/2002, 10/24/2002, 11/20/2002, 01/08/2003, 04/01/2003, 04/15/2003, 05/14/2003, 06/09/2003, 07/08/2003, 07/21/2003, 10/05/2003, 08/10/2004, 08/23/2004, 10/18/2004, 11/03/2004, 11/29/2004, 06/13/2005, 07/19/2005, 08/03/2005, 08/30/2005, 09/26/2005, 03/10/2006, 05/31/2006, 07/10/2006, 08/09/2006, 08/28/2006, 09/18/2006, 10/02/2006, 10/31/2006, 11/13/2006, 01/09/2007, 04/09/2007, 06/06/2007, 07/09/2007, 08/29/2007, 09/19/2007, 10/05/2007, 11/06/2007, 11/27/2007, 12/12/2007, 01/17/2008, 02/07/2008, 02/19/2008, 05/13/2008, 06/27/2008, 07/18/2008, 07/28/2008, 09/11/2008, 09/29/2008, 11/04/2008, 01/09/2009, 02/24/2009, 03/25/2009, 04/14/2009, 05/26/2009, 05/31/2009, 06/05/2009, 06/09/2009, 06/14/2009, 06/18/2009, 06/23/2009, 06/25/2009, 06/27/2009, 07/02/2009, 07/07/2009, 07/11/2009, 07/14/2009, 07/16/2009, 07/20/2009, 07/25/2009, 07/30/2009, 08/03/2009, 08/08/2009, 08/12/2009, 08/17/2009, 08/21/2009, 08/26/2009, 08/31/2009, 09/16/2009, 11/18/2009, 12/01/2009, 03/01/2010, 04/02/2010, 04/18/2010, 04/23/2010, 05/17/2010, 09/28/2010, 10/19/2010, 12/06/2010, 02/22/2011, 06/07/2011, 08/29/2011, 09/07/2011, 01/18/2012, 04/13/2012, 06/22/2012, 09/17/2012, 01/02/2013, 01/22/2013, 04/08/2013, 04/23/2013, 02/03/2014, 03/25/2014, 07/03/2014, 09/19/2014, 11/07/2014, 12/03/2014, 12/19/2014, 05/04/2015, 07/02/2015, 07/29/2015, 12/07/2015. Values of 1783 records in Conductivity were flagged as I (invalid value (out of range)) for dates: 06/04/2017-06/21/2017, 09/21/2017-09/30/2017, 10/15/2017-10/26/2017. Values of 2225 records in Conductivity were flagged as Q (questionable value) for dates: 02/06/2002, 10/07/2003, 07/10/2004-07/11/2004, 07/11/2004-07/14/2004, 03/17/2006-03/18/2006, 09/07/2006-09/18/2006, 08/12/2007-08/14/2007, 09/02/2007, 11/02/2007-11/06/2007, 05/05/2008-05/13/2008, 07/17/2008-07/18/2008, 03/24/2009-03/25/2009, 06/25/2009, 10/19/2010, 10/29/2011-11/04/2011, 02/07/2012, 11/05/2012, 03/30/2015, 08/20/2015, 08/25/2015, 10/02/2015-10/07/2015, 12/07/2015, 03/22/2016, 09/29/2016, 12/22/2016, 06/21/2017. Values of 20540 records in Conductivity are missing for dates: 09/07/2001-10/24/2001, 09/20/2003-09/24/2003, 10/07/2003-10/16/2003, 10/24/2003-10/29/2003, 11/06/2003-05/05/2004, 10/01/2004-10/05/2004, 02/28/2005-03/01/2005, 11/30/2005-12/01/2005, 08/26/2010-08/31/2010, 04/12/2011-04/18/2011, 01/19/2012-02/07/2012, 07/23/2013-11/22/2013, 08/21/2014-09/09/2014, 09/28/2016-09/29/2016, 12/21/2016-12/22/2016. Values of 3374 records in Pressure were flagged as E (data value estimated by interpolation) for dates: 03/14/2002-05/15/2002, 06/11/2002, 07/10/2002, 07/23/2002, 08/06/2002, 08/21/2002, 09/16/2002, 10/02/2002, 10/24/2002, 11/20/2002, 01/08/2003, 04/01/2003, 04/15/2003, 07/21/2003, 08/10/2004, 08/23/2004, 10/18/2004, 11/03/2004, 11/29/2004, 06/13/2005, 07/19/2005, 08/03/2005, 08/30/2005, 09/26/2005, 03/10/2006, 05/31/2006, 08/28/2006, 09/18/2006, 10/31/2006, 11/13/2006, 01/09/2007, 04/09/2007, 06/06/2007, 07/09/2007, 08/29/2007, 09/19/2007, 10/05/2007, 11/06/2007, 11/27/2007, 12/12/2007, 01/17/2008, 02/07/2008, 02/19/2008, 05/13/2008, 06/27/2008, 07/18/2008, 07/28/2008, 09/11/2008, 09/29/2008, 11/04/2008, 01/09/2009, 02/24/2009, 03/25/2009, 04/14/2009, 05/26/2009, 05/31/2009, 06/05/2009, 06/09/2009, 06/14/2009, 06/18/2009, 06/23/2009, 06/25/2009, 06/27/2009, 07/02/2009, 07/07/2009, 07/11/2009, 07/14/2009, 07/16/2009, 07/20/2009, 07/25/2009, 07/30/2009, 08/03/2009, 08/08/2009, 08/12/2009, 08/17/2009, 08/21/2009, 08/26/2009, 08/31/2009, 09/16/2009, 11/18/2009, 12/01/2009, 03/01/2010, 04/02/2010, 04/18/2010, 04/23/2010, 05/17/2010, 08/31/2010, 09/28/2010, 10/19/2010, 12/06/2010, 02/22/2011, 06/07/2011, 08/29/2011, 09/07/2011, 01/18/2012, 04/13/2012, 06/22/2012, 09/17/2012, 01/02/2013, 01/22/2013, 04/08/2013, 04/23/2013, 02/03/2014, 03/25/2014, 07/03/2014, 09/19/2014, 11/07/2014, 12/03/2014, 12/19/2014, 05/04/2015, 07/02/2015, 07/29/2015, 12/07/2015. Values of 3 records in Pressure were flagged as Q (questionable value) for dates: 05/14/2003, 06/09/2003, 07/08/2003. Values of 15995 records in Pressure are missing for dates: 11/06/2003-05/05/2004, 02/28/2005-03/01/2005, 11/30/2005-12/01/2005, 04/12/2011-04/18/2011, 07/23/2013-11/22/2013, 08/21/2014-09/09/2014, 09/28/2016-09/29/2016, 12/21/2016-12/22/2016. Values of 3378 records in Depth were flagged as E (data value estimated by interpolation) for dates: 03/14/2002-05/15/2002, 06/11/2002, 07/10/2002, 07/23/2002, 08/06/2002, 08/21/2002, 09/16/2002, 10/02/2002, 10/24/2002, 11/20/2002, 01/08/2003, 04/01/2003, 04/15/2003, 05/14/2003, 06/09/2003, 07/08/2003, 07/21/2003, 08/10/2004, 08/23/2004, 10/18/2004, 11/03/2004, 11/29/2004, 06/13/2005, 07/19/2005, 08/03/2005, 08/30/2005, 09/26/2005, 03/10/2006, 05/31/2006, 08/09/2006, 08/28/2006, 09/18/2006, 10/31/2006, 11/13/2006, 01/09/2007, 04/09/2007, 06/06/2007, 07/09/2007, 08/29/2007, 09/19/2007, 10/05/2007, 11/06/2007, 11/27/2007, 12/12/2007, 01/17/2008, 02/07/2008, 02/19/2008, 05/13/2008, 06/27/2008, 07/18/2008, 07/28/2008, 09/11/2008, 09/29/2008, 11/04/2008, 01/09/2009, 02/24/2009, 03/25/2009, 04/14/2009, 05/26/2009, 05/31/2009, 06/05/2009, 06/09/2009, 06/14/2009, 06/18/2009, 06/23/2009, 06/25/2009, 06/27/2009, 07/02/2009, 07/07/2009, 07/11/2009, 07/14/2009, 07/16/2009, 07/20/2009, 07/25/2009, 07/30/2009, 08/03/2009, 08/08/2009, 08/12/2009, 08/17/2009, 08/21/2009, 08/26/2009, 08/31/2009, 09/16/2009, 11/18/2009, 12/01/2009, 03/01/2010, 04/02/2010, 04/18/2010, 04/23/2010, 05/17/2010, 08/31/2010, 09/28/2010, 10/19/2010, 12/06/2010, 02/22/2011, 06/07/2011, 08/29/2011, 09/07/2011, 01/18/2012, 04/13/2012, 06/22/2012, 09/17/2012, 01/02/2013, 01/22/2013, 04/08/2013, 04/23/2013, 02/03/2014, 03/25/2014, 07/03/2014, 09/19/2014, 11/07/2014, 12/03/2014, 12/19/2014, 05/04/2015, 07/02/2015, 07/29/2015, 12/07/2015. Values of 15995 records in Depth are missing for dates: 11/06/2003-05/05/2004, 02/28/2005-03/01/2005, 11/30/2005-12/01/2005, 04/12/2011-04/18/2011, 07/23/2013-11/22/2013, 08/21/2014-09/09/2014, 09/28/2016-09/29/2016, 12/21/2016-12/22/2016. Values of 3376 records in Salinity were flagged as E (data value estimated by interpolation) for dates: 03/14/2002-05/15/2002, 06/11/2002, 07/10/2002, 07/23/2002, 08/06/2002, 08/21/2002, 09/16/2002, 10/02/2002, 10/24/2002, 11/20/2002, 01/08/2003, 04/01/2003, 04/15/2003, 05/14/2003, 06/09/2003, 07/08/2003, 07/21/2003, 10/05/2003, 08/10/2004, 08/23/2004, 10/18/2004, 11/03/2004, 11/29/2004, 06/13/2005, 07/19/2005, 08/03/2005, 08/30/2005, 09/26/2005, 03/10/2006, 05/31/2006, 07/10/2006, 08/09/2006, 08/28/2006, 09/18/2006, 10/02/2006, 10/31/2006, 11/13/2006, 01/09/2007, 04/09/2007, 06/06/2007, 07/09/2007, 08/29/2007, 09/19/2007, 10/05/2007, 11/06/2007, 11/27/2007, 12/12/2007, 01/17/2008, 02/07/2008, 02/19/2008, 05/13/2008, 06/27/2008, 07/18/2008, 07/28/2008, 09/11/2008, 09/29/2008, 11/04/2008, 01/09/2009, 02/24/2009, 03/25/2009, 04/14/2009, 05/26/2009, 05/31/2009, 06/05/2009, 06/09/2009, 06/14/2009, 06/18/2009, 06/23/2009, 06/25/2009, 06/27/2009, 07/02/2009, 07/07/2009, 07/11/2009, 07/14/2009, 07/16/2009, 07/20/2009, 07/25/2009, 07/30/2009, 08/03/2009, 08/08/2009, 08/12/2009, 08/17/2009, 08/21/2009, 08/26/2009, 08/31/2009, 09/16/2009, 11/18/2009, 12/01/2009, 03/01/2010, 04/02/2010, 04/18/2010, 04/23/2010, 05/17/2010, 09/28/2010, 10/19/2010, 12/06/2010, 02/22/2011, 06/07/2011, 08/29/2011, 09/07/2011, 01/18/2012, 04/13/2012, 06/22/2012, 09/17/2012, 01/02/2013, 01/22/2013, 04/08/2013, 04/23/2013, 02/03/2014, 03/25/2014, 07/03/2014, 09/19/2014, 11/07/2014, 12/03/2014, 12/19/2014, 05/04/2015, 07/02/2015, 07/29/2015, 12/07/2015. Values of 1783 records in Salinity were flagged as I (invalid value (out of range)) for dates: 06/04/2017-06/21/2017, 09/21/2017-09/30/2017, 10/15/2017-10/26/2017. Values of 2227 records in Salinity were flagged as Q (questionable value) for dates: 02/06/2002, 10/07/2003, 07/10/2004-07/11/2004, 07/11/2004-07/14/2004, 03/17/2006-03/18/2006, 09/07/2006-09/18/2006, 08/12/2007-08/14/2007, 09/02/2007, 11/02/2007-11/06/2007, 05/05/2008-05/13/2008, 07/17/2008-07/18/2008, 03/24/2009-03/25/2009, 06/25/2009, 09/28/2010, 10/19/2010, 10/29/2011-11/04/2011, 02/07/2012, 11/05/2012, 03/30/2015, 08/20/2015, 08/25/2015, 10/02/2015-10/07/2015, 12/07/2015, 03/22/2016, 09/29/2016, 12/22/2016, 03/09/2017, 06/21/2017. Values of 20542 records in Salinity are missing for dates: 09/07/2001-10/24/2001, 09/20/2003-09/24/2003, 10/07/2003-10/16/2003, 10/24/2003-10/29/2003, 11/06/2003-05/05/2004, 10/01/2004-10/05/2004, 02/28/2005-03/01/2005, 11/30/2005-12/01/2005, 08/26/2010-08/31/2010, 04/12/2011-04/18/2011, 01/19/2012-02/07/2012, 07/23/2013-11/22/2013, 08/21/2014-09/09/2014, 09/28/2016-09/29/2016, 12/21/2016-12/22/2016. Values of 3376 records in Sigma_t were flagged as E (data value estimated by interpolation) for dates: 03/14/2002-05/15/2002, 06/11/2002, 07/10/2002, 07/23/2002, 08/06/2002, 08/21/2002, 09/16/2002, 10/02/2002, 10/24/2002, 11/20/2002, 01/08/2003, 04/01/2003, 04/15/2003, 05/14/2003, 06/09/2003, 07/08/2003, 07/21/2003, 10/05/2003, 08/10/2004, 08/23/2004, 10/18/2004, 11/03/2004, 11/29/2004, 06/13/2005, 07/19/2005, 08/03/2005, 08/30/2005, 09/26/2005, 03/10/2006, 05/31/2006, 07/10/2006, 08/09/2006, 08/28/2006, 09/18/2006, 10/02/2006, 10/31/2006, 11/13/2006, 01/09/2007, 04/09/2007, 06/06/2007, 07/09/2007, 08/29/2007, 09/19/2007, 10/05/2007, 11/06/2007, 11/27/2007, 12/12/2007, 01/17/2008, 02/07/2008, 02/19/2008, 05/13/2008, 06/27/2008, 07/18/2008, 07/28/2008, 09/11/2008, 09/29/2008, 11/04/2008, 01/09/2009, 02/24/2009, 03/25/2009, 04/14/2009, 05/26/2009, 05/31/2009, 06/05/2009, 06/09/2009, 06/14/2009, 06/18/2009, 06/23/2009, 06/25/2009, 06/27/2009, 07/02/2009, 07/07/2009, 07/11/2009, 07/14/2009, 07/16/2009, 07/20/2009, 07/25/2009, 07/30/2009, 08/03/2009, 08/08/2009, 08/12/2009, 08/17/2009, 08/21/2009, 08/26/2009, 08/31/2009, 09/16/2009, 11/18/2009, 12/01/2009, 03/01/2010, 04/02/2010, 04/18/2010, 04/23/2010, 05/17/2010, 09/28/2010, 10/19/2010, 12/06/2010, 02/22/2011, 06/07/2011, 08/29/2011, 09/07/2011, 01/18/2012, 04/13/2012, 06/22/2012, 09/17/2012, 01/02/2013, 01/22/2013, 04/08/2013, 04/23/2013, 02/03/2014, 03/25/2014, 07/03/2014, 09/19/2014, 11/07/2014, 12/03/2014, 12/19/2014, 05/04/2015, 07/02/2015, 07/29/2015, 12/07/2015. Values of 1783 records in Sigma_t were flagged as I (invalid value (out of range)) for dates: 06/04/2017-06/21/2017, 09/21/2017-09/30/2017, 10/15/2017-10/26/2017. Values of 2227 records in Sigma_t were flagged as Q (questionable value) for dates: 02/06/2002, 10/07/2003, 07/10/2004-07/11/2004, 07/11/2004-07/14/2004, 03/17/2006-03/18/2006, 09/07/2006-09/18/2006, 08/12/2007-08/14/2007, 09/02/2007, 11/02/2007-11/06/2007, 05/05/2008-05/13/2008, 07/17/2008-07/18/2008, 03/24/2009-03/25/2009, 06/25/2009, 09/28/2010, 10/19/2010, 10/29/2011-11/04/2011, 02/07/2012, 11/05/2012, 03/30/2015, 08/20/2015, 08/25/2015, 10/02/2015-10/07/2015, 12/07/2015, 03/22/2016, 09/29/2016, 12/22/2016, 03/09/2017, 06/21/2017. Values of 20540 records in Sigma_t are missing for dates: 09/07/2001-10/24/2001, 09/20/2003-09/24/2003, 10/07/2003-10/16/2003, 10/24/2003-10/29/2003, 11/06/2003-05/05/2004, 10/01/2004-10/05/2004, 02/28/2005-03/01/2005, 11/30/2005-12/01/2005, 08/26/2010-08/31/2010, 04/12/2011-04/18/2011, 01/19/2012-02/07/2012, 07/23/2013-11/22/2013, 08/21/2014-09/09/2014, 09/28/2016-09/29/2016, 12/21/2016-12/22/2016. conductivity readings dropped around 11-22-2018 and jumped after maintenance on 11-29-2018. Values in this range were flagged 'Q' Values of 6 records in Temperature were flagged as E (data value estimated by interpolation) for dates: 03/07/2018, 03/19/2018, 06/12/2018, 09/18/2018, 12/10/2018. Values of 6 records in Conductivity were flagged as E (data value estimated by interpolation) for dates: 03/07/2018, 03/19/2018, 06/12/2018, 09/18/2018, 12/10/2018. Values of 488 records in Conductivity were flagged as Q (questionable value) for dates: 05/13/2018-05/16/2018, 11/22/2018-11/29/2018. Values of 6 records in Pressure were flagged as E (data value estimated by interpolation) for dates: 03/07/2018, 03/19/2018, 06/12/2018, 09/18/2018, 12/10/2018. Values of 6 records in Depth were flagged as E (data value estimated by interpolation) for dates: 03/07/2018, 03/19/2018, 06/12/2018, 09/18/2018, 12/10/2018. Values of 6 records in Salinity were flagged as E (data value estimated by interpolation) for dates: 03/07/2018, 03/19/2018, 06/12/2018, 09/18/2018, 12/10/2018. Values of 488 records in Salinity were flagged as Q (questionable value) for dates: 05/13/2018-05/16/2018, 11/22/2018-11/29/2018. Values of 6 records in Sigma_t were flagged as E (data value estimated by interpolation) for dates: 03/07/2018, 03/19/2018, 06/12/2018, 09/18/2018, 12/10/2018. Values of 488 records in Sigma_t were flagged as Q (questionable value) for dates: 05/13/2018-05/16/2018, 11/22/2018-11/29/2018. Deleted the following rows with values in column(s) Temperature, Conductivity or Pressure assigned QA/QC flag(s) X (excise row flag): 2680. Deleted the following rows with values in column(s) Pressure assigned QA/QC flag(s) X (excise row flag): 5485. Deleted the following rows with values in column(s) Pressure assigned QA/QC flag(s) X (excise row flag): 5466, 5490, 5491 and 5492. Deleted the following rows with values in column(s) Pressure assigned QA/QC flag(s) X (excise row flag): 5466, 5490, 5491 and 5492. Deleted the following rows with values in column(s) Pressure assigned QA/QC flag(s) X (excise row flag): 2115. Deleted the following rows with values in column(s) Pressure assigned QA/QC flag(s) X (excise row flag): 2308. V. Supplemental Descriptors A. Data Acquisition 1. Data Forms: Copies of CTD cast logs and raw data are maintained at the Georgia Coastal Ecosystems Information Management Office 2. Form Location: GCE-LTER Information Management Office, Dept. of Marine Sciences, University of Georgia, Athens, GA 30602 3. Data Entry Validation: Data format is validated during download by Sea-Bird Electronics Sea-Soft version 4.246, and also by custom data import programs in the GCE Data Toolbox for MATLAB. B. Quality Assurance/Quality Control Procedures: QA/QC flags are generated automatically according to domain criteria specified for each data column, then subsequently reviewed and revised as appropriate. Coded flag columns are generated for each data column, listing qualifier flags assigned to the data value on the corresponding row. C. Supplemental Materials: not applicable D. Computer Programs: Sea-Bird Electronics Sea-Soft version 4.246, MATLAB version 2013B E. Archival Practices: Data sets and documentation are stored in structured binary (Matlab 5.x files) and delimited ASCII text formats, and archived on magnetic tape and CD at the GCE LTER Information Management Office at the University of Georgia, Athens, Georgia, USA F. Publications: not specified G. History of Data Set Usage 1. Data Request History: not specified 2. Data Set Update History: May 18, 2021: Updated with data from 2018 and 2019 Jun 05, 2022: Updated with data from 2020 Mar 03, 2024: updated with data from 2021 and 2022 - no GCE 9 for 2022 due to destroyed piling 3. Review History: none 4. Questions and Comments from Users: none