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Dataset Title:	NEMO-SN1 Observatory CTD data (2002-2003)
Institution:	Istituto Nazionale Geofisica e Vulcanologia - Sez. Roma2 (Dataset ID: GNDT_1_CTD)
Range:	longitude = 15.393117 to 15.393117°E, latitude = 37.44222 to 37.44222°N, depth = 2100.0 to 2100.0m, time = 2002-10-09T16:00:00Z to 2003-02-20T21:00:00Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

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Things You Can Do With Your Graphs

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range 15.393117, 15.393117;
    String ancillary_variables "POSITION_QC";
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "longitude of measurements";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Longitude east";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ALONZZ01";
    String sdn_parameter_urn "SDN:P01::ALONZZ01";
    String sdn_uom_name "Degrees east";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UAAA/";
    String sdn_uom_urn "SDN:P06::DEGE";
    String standard_name "longitude";
    String units "degrees_east";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.0341792e+9, 1.0457748e+9;
    String ancillary_variables "TIME_QC";
    String axis "T";
    String cf_role "timeseries_id";
    String ioos_category "Time";
    String long_name "time of measurements";
    String sdn_P02_urn "SDN:P02::AYMD";
    String sdn_parameter_name "Elapsed time relative to 1970-01-01T00:00:00Z";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ELTMEP01/";
    String sdn_parameter_urn "SDN:P01::ELTMEP01";
    String sdn_uom_name "days";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UTBB/";
    String sdn_uom_urn "SDN:P06::UTAA";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 2100.0, 2100.0;
    String ancillary_variables "DEPTH_QC";
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "depth of measurements";
    String positive "down";
    String sdn_P02_urn "SDN:P02::AHGT";
    String sdn_parameter_name "Depth (spatial coordinate) relative to water surface in the water body";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ADEPZZ01/";
    String sdn_parameter_urn "SDN:P01::ADEPZZ01";
    String sdn_uom_name "meters";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/ULAA/";
    String sdn_uom_urn "SDN:P06::ULAA";
    String standard_name "depth";
    String units "m";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 37.442217, 37.442217;
    String ancillary_variables "POSITION_QC";
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "latitude of measurements";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Latitude north";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ALATZZ01/";
    String sdn_parameter_urn "SDN:P01::ALATZZ01";
    String sdn_uom_name "Degrees north";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UAAA/";
    String sdn_uom_urn "SDN:P06::DEGN";
    String standard_name "latitude";
    String units "degrees_north";
  }
  TEMP {
    Float32 _FillValue -999.0;
    Float32 actual_range 13.714, 13.76848;
    String ancillary_variables "TEMP_QC";
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Temperature";
    String long_name "temperature";
    Float32 missing_value -999.0;
    String reference_scale "ITS-90";
    String sdn_P02_urn "SDN:P02::TEMP";
    String sdn_parameter_name "Temperature of the water body";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/TEMPPR01/";
    String sdn_parameter_urn "SDN:P01::TEMPPR01";
    String sdn_uom_name "Degrees Celsius";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UPAA";
    String sdn_uom_urn "SDN:P06::UPAA";
    String sensor_depth "2100";
    String sensor_manufacturer "Sea-Bird Scientific";
    String sensor_manufacturer_uri "https://vocab.nerc.ac.uk/collection/L35/current/MAN0013/";
    String sensor_manufacturer_urn "SDN:L35::MAN0013";
    String sensor_model "Sea-Bird SBE 37 MicroCat SM-CT with optional pressure (submersible) CTD sensor series";
    String sensor_mount "mounted_on_seafloor_structure";
    String sensor_orientation "horizontal";
    String sensor_reference "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0017/";
    String sensor_SeaVoX_L22_code "SDN:L22::TOOL0017";
    String sensor_type_name "SBE37";
    String sensor_type_uri "https://vocab.nerc.ac.uk/collection/L05/current/130/";
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
  CNDC {
    Float32 _FillValue -999.0;
    Float32 actual_range 46.48407, 46.55902;
    String ancillary_variables "CNDC_QC";
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 30.0;
    String ioos_category "Salinity";
    String long_name "conductivity";
    String sdn_P02_urn "SDN:P02::CNDC";
    String sdn_parameter_name "Electrical conductivity of the water body";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/CNDCZZ01/";
    String sdn_parameter_urn "SDN:P01::CNDCZZ01";
    String sdn_uom_name "MilliSiemens per centimetre";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/MSCM/";
    String sdn_uom_urn "SDN:P06::MSCM";
    String sensor_depth "2100";
    String sensor_manufacturer "Sea-Bird Scientific";
    String sensor_manufacturer_uri "https://vocab.nerc.ac.uk/collection/L35/current/MAN0013/";
    String sensor_manufacturer_urn "SDN:L35::MAN0013";
    String sensor_model "Sea-Bird SBE 37 MicroCat SM-CT with optional pressure (submersible) CTD sensor series";
    String sensor_mount "mounted_on_seafloor_structure";
    String sensor_orientation "horizontal";
    String sensor_reference "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0017/";
    String sensor_SeaVoX_L22_code "SDN:L22::TOOL0017";
    String sensor_type_name "SBE37";
    String sensor_type_uri "https://vocab.nerc.ac.uk/collection/L05/current/130/";
    String standard_name "sea_water_electrical_conductivity";
    String units "MilliSiemens per centimetre";
  }
  PRES {
    Float32 _FillValue -999.0;
    Float32 actual_range 2102.822, 2110.663;
    String ancillary_variables "PRES_QC";
    Float64 colorBarMaximum 5000.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Pressure";
    String long_name "pressure";
    String sdn_P02_urn "SDN:P02::ASLV";
    String sdn_parameter_name "Pressure (measured variable) exerted by the water body plus atmosphere by fixed in-situ pressure sensor";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/PRSTPS01/";
    String sdn_parameter_urn "SDN:P01::PRSTPS01";
    String sdn_uom_name "Decibars";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UPDB/";
    String sdn_uom_urn "SDN:P06::UPDB";
    String sensor_depth "2100";
    String sensor_manufacturer "Sea-Bird Scientific";
    String sensor_manufacturer_uri "https://vocab.nerc.ac.uk/collection/L35/current/MAN0013/";
    String sensor_manufacturer_urn "SDN:L35::MAN0013";
    String sensor_model "Sea-Bird SBE 37 MicroCat SM-CT with optional pressure (submersible) CTD sensor series";
    String sensor_mount "mounted_on_seafloor_structure";
    String sensor_orientation "horizontal";
    String sensor_reference "https://vocab.nerc.ac.uk/collection/L22/current/TOOL0017/";
    String sensor_SeaVoX_L22_code "SDN:L22::TOOL0017";
    String sensor_type_name "SBE37";
    String sensor_type_uri "https://vocab.nerc.ac.uk/collection/L05/current/130/";
    String standard_name "sea_water_pressure";
    String units "Decibar";
  }
  PRES_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown good_data probably_good_data potentially_correctable_bad_data bad_data nominal_value interpolated_value missing_value";
    String flag_values "0,1,2,3,4,5,6,7,8,9";
    String ioos_category "Quality";
    String long_name "Pressure quality flag";
  }
  CNDC_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown good_data probably_good_data potentially_correctable_bad_data bad_data nominal_value interpolated_value missing_value";
    String flag_values "0,1,2,3,4,5,6,7,8,9";
    String ioos_category "Quality";
    String long_name "Conductivity quality flag";
  }
  TIME_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown good_data probably_good_data potentially_correctable_bad_data bad_data nominal_value interpolated_value missing_value";
    String flag_values "0,1,2,3,4,5,6,7,8,9";
    String ioos_category "Quality";
    String long_name "Time quality flag";
  }
  TEMP_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown good_data probably_good_data potentially_correctable_bad_data bad_data nominal_value interpolated_value missing_value";
    String flag_values "0,1,2,3,4,5,6,7,8,9";
    String ioos_category "Quality";
    String long_name "Temperature quality flag";
  }
  POSITION_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown good_data probably_good_data potentially_correctable_bad_data bad_data nominal_value interpolated_value missing_value";
    String flag_values "0,1,2,3,4,5,6,7,8,9";
    String ioos_category "Quality";
    String long_name "Position quality flag";
  }
  DEPTH_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown good_data probably_good_data potentially_correctable_bad_data bad_data nominal_value interpolated_value missing_value";
    String flag_values "0,1,2,3,4,5,6,7,8,9";
    String ioos_category "Quality";
    String long_name "Depth quality flag";
    String standard_name "status_flag";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "depth,latitude,longitude,time";
    String Conventions "OceanSITES-1.5,SeaDataNet_1.0,COARDS, CF-1.6, ACDD-1.3";
    String creator_name "Istituto Nazionale Geofisica e Vulcanologia - Sez. Roma2";
    String creator_url "www.moist.it";
    String data_mode "D";
    String data_type "OceanSITES time-series data";
    String date_created "2023-07-26T17:55:26Z";
    Float64 Easternmost_Easting 15.393117;
    String emso_facility "Western Ionian Sea";
    String featureType "TimeSeries";
    String format_version "1.4";
    Float64 geospatial_lat_max 37.442217;
    Float64 geospatial_lat_min 37.442217;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 15.393117;
    Float64 geospatial_lon_min 15.393117;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 2100.0;
    Float64 geospatial_vertical_min 2100.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"fixed benthic node
2024-11-15T07:27:00Z (local files)
2024-11-15T07:27:00Z http://oceano.bo.ingv.it/tabledap/GNDT_1_CTD.das";
    String infoUrl "http://www.moist.it/sites/western_ionian_sea/2/GNDT1/ctd/22";
    String institution "Istituto Nazionale Geofisica e Vulcanologia - Sez. Roma2";
    String institution_edmo_code "3917";
    String institution_edmo_uri "https://edmo.seadatanet.org/report/3917";
    String institution_ror_uri "https://ror.org/00qps9a02";
    String keywords "2002-2003, CNDC, CNDC_QC, conductivity, ctd, data, density, depth, DEPTH_QC, earth, Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, electrical, electrical conductivity of the water column, flag, geofisica, identifier, istituto, latitude, longitude, MACMAP, nazionale, nemo, nemo-sn1, observatory, ocean, oceans, position, POSITION_QC, PRES, PRES_QC, pressure, quality, roma2, salinity, science, sea, sea_water_electrical_conductivity, sea_water_pressure, sea_water_temperature, seawater, sez, sn1, sonde, TEMP, TEMP_QC, temperature, temperature of the water column, time, TIME_QC, vulcanologia, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "CC-BY-4.0";
    String license_uri "https://spdx.org/licenses/CC-BY-4.0.json";
    String network "EMSO-ERIC";
    Float64 Northernmost_Northing 37.442217;
    String principal_investigator "Nadia Lo Bue";
    String principal_investigator_email "nadia.lobue@ingv.it";
    String project "ESONET";
    String site_code "NEMO-SN1";
    String source "fixed benthic node";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 37.442217;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "longitude, depth, latitude, PRES_QC, CNDC_QC, TIME_QC, TEMP_QC, POSITION_QC, DEPTH_QC";
    String summary "The dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired through a SBE 37-SM installed on SN-1 station. The collection period ranges from October 2002 through February 2003.";
    String time_coverage_end "2003-02-20T21:00:00Z";
    String time_coverage_start "2002-10-09T16:00:00Z";
    String title "NEMO-SN1 Observatory CTD data (2002-2003)";
    String update_interval "void";
    Float64 Westernmost_Easting 15.393117;
  }
}

Using tabledap to Request Data and Graphs from Tabular Datasets

tabledap lets you request a data subset, a graph, or a map from a tabular dataset (for example, buoy data), via a specially formed URL. tabledap uses the OPeNDAP (external link)

Data Access Protocol (DAP) (external link)

and its selection constraints (external link)

The URL specifies what you want: the dataset, a description of the graph or the subset of the data, and the file type for the response.

(easy) You can get data by using the dataset's Data Access Form or Subset form. They make the URL for you.
(easy) You can make a graph or map by using the dataset's Make A Graph form. It makes the URL for you.
(not hard) You can bypass the forms and get the data or make a graph or map by generating the URL by hand or with a computer program or script.

Tabledap request URLs must be in the form
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/datasetID.fileType{?query}
For example,
https://coastwatch.pfeg.noaa.gov/erddap/tabledap/pmelTaoDySst.htmlTable?longitude,latitude,time,station,wmo_platform_code,T_25&time>=2015-05-23T12:00:00Z&time<=2015-05-31T12:00:00Z
Thus, the query is often a comma-separated list of desired variable names, followed by a collection of constraints (e.g., variable<value), each preceded by '&' (which is interpreted as "AND").

For details, see the tabledap Documentation.