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ERDDAP
Easier access to scientific data |
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| Dataset Title: | "Profile - R1.x132.134.0051 - 33.cnv - 28.72N, 88.41W - 2010-05-12"
|
| Institution: | University of Georgia / Department of Marine Sciences (Dataset ID: R1_x132_134_0051_33_cnv) |
| Information: | Summary
| License
| FGDC
| ISO 19115
| Metadata
| Background
| Subset
| Make a graph
|
Attributes {
s {
profile {
Int16 actual_range -32767, -32767;
String cf_role "profile_id";
String ioos_category "Identifier";
String long_name "33";
}
time {
String _CoordinateAxisType "Time";
Float64 actual_range 1.273680351e+9, 1.273680351e+9;
String ancillary_variables "unknown";
String axis "T";
String calendar "gregorian";
Float64 colorBarMaximum 1.35e+9;
Float64 colorBarMinimum 1.2e+9;
String comment "UTC";
String coverage_content_type "physicalMeasurement";
String ioos_category "Time";
String long_name "Time";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String units "seconds since 1970-01-01T00:00:00Z";
Float64 valid_max 1.273680351e+9;
Float64 valid_min 1.273680351e+9;
}
latitude {
String _CoordinateAxisType "Lat";
Float64 _FillValue -9.99e-29;
Float64 actual_range 28.716, 28.716;
String ancillary_variables "unknown";
String axis "Y";
Float64 colorBarMaximum 90.0;
Float64 colorBarMinimum -90.0;
String comment "unknown";
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Latitude";
String standard_name "latitude";
String units "degrees_north";
Float64 valid_max 28.716;
Float64 valid_min 28.716;
}
longitude {
String _CoordinateAxisType "Lon";
Float64 _FillValue -9.99e-29;
Float64 actual_range -88.409, -88.409;
String ancillary_variables "unknown";
String axis "X";
Float64 colorBarMaximum 180.0;
Float64 colorBarMinimum -180.0;
String comment "unknown";
String coverage_content_type "coordinate";
String ioos_category "Location";
String long_name "Longitude";
String standard_name "longitude";
String units "degrees_east";
Float64 valid_max -88.409;
Float64 valid_min -88.409;
}
pressure {
Float64 _FillValue -9.99e-29;
Float64 actual_range 0.503, 1571.904;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 5000.0;
Float64 colorBarMinimum 0.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String ioos_category "Pressure";
String long_name "Sea Water Pressure";
String positive "down";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_pressure";
String units "db";
Float64 valid_max 1571.904;
Float64 valid_min 0.503;
}
depth {
String _CoordinateAxisType "Height";
String _CoordinateZisPositive "down";
Float64 _FillValue -9.99e-29;
Float64 actual_range 0.495, 1555.526;
String ancillary_variables "unknown";
String axis "Z";
String cell_method "unknown";
Float64 colorBarMaximum 8000.0;
Float64 colorBarMinimum -8000.0;
String colorBarPalette "TopographyDepth";
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String ioos_category "Location";
String long_name "Depth";
String positive "down";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "depth";
String units "m";
Float64 valid_max 1555.526;
Float64 valid_min 0.495;
}
depth2 {
Float64 _FillValue -9.99e-29;
Float64 actual_range 0.5, 1555.5;
String ancillary_variables "unknown";
String axis "Z";
String cell_method "unknown";
Float64 colorBarMaximum 8000.0;
Float64 colorBarMinimum -8000.0;
String colorBarPalette "TopographyDepth";
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String ioos_category "Location";
String long_name "Depth 2";
String positive "down";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "depth";
String units "m";
Float64 valid_max 1555.5;
Float64 valid_min 0.5;
}
temperature {
Float64 _FillValue -9.99e-29;
Float64 actual_range 4.2902, 24.8529;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 32.0;
Float64 colorBarMinimum 0.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "unknown";
String ioos_category "Temperature";
String long_name "Temperature ";
String ncei_name "Temperature ";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_temperature";
String units "deg C";
Float64 valid_max 24.8529;
Float64 valid_min 4.2902;
}
temperature2 {
Float64 _FillValue -9.99e-29;
Float64 actual_range 4.2904, 24.8494;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum -10.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "unknown";
String ioos_category "Temperature";
String long_name "Temperature 2";
String ncei_name "Temperature 2";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_temperature_2";
String units "deg C";
Float64 valid_max 24.8494;
Float64 valid_min 4.2904;
}
conductivity {
Float64 _FillValue -9.99e-29;
Float64 actual_range 3.344403, 5.221273;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum 30.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Salinity";
String long_name "Conductivity";
String ncei_name "Conductivity";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_electrical_conductivity";
String units "S/m";
Float64 valid_max 5.221273;
Float64 valid_min 3.344403;
}
conductivity2 {
Float64 _FillValue -9.99e-29;
Float64 actual_range 3.344543, 5.220488;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 40.0;
Float64 colorBarMinimum 30.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Salinity";
String long_name "Conductivity sensor 2";
String ncei_name "Conductivity 2";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_electrical_conductivity";
String units "S/m";
Float64 valid_max 5.220488;
Float64 valid_min 3.344543;
}
salinity {
Float64 _FillValue -9.99e-29;
Float64 actual_range 33.9191, 36.4137;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 32.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Salinity";
String long_name "Salinity";
String ncei_name "Salinity";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_practical_salinity";
String units "PSU";
Float64 valid_max 36.4137;
Float64 valid_min 33.9191;
}
salinity2 {
Float64 _FillValue -9.99e-29;
Float64 actual_range 33.9158, 36.4104;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 37.0;
Float64 colorBarMinimum 32.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Salinity";
String long_name "Salinity 2";
String ncei_name "Salinity 2";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_practical_salinity";
String units "PSU";
Float64 valid_max 36.4104;
Float64 valid_min 33.9158;
}
oxygen {
Float64 _FillValue -9.99e-29;
Float64 actual_range 2.0496, 5.0077;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 500.0;
Float64 colorBarMinimum 0.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Dissolved O2";
String long_name "dissolved Oxygen";
String ncei_name "dissolved Oxygen";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "dissolved_oxygen_in_sea_water";
String units "umol/l";
Float64 valid_max 5.0077;
Float64 valid_min -9.99e-29;
}
oxygen2 {
Float64 _FillValue -9.99e-29;
Float64 actual_range 1.839, 5.0865;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 500.0;
Float64 colorBarMinimum 0.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Dissolved O2";
String long_name "dissolved Oxygen 2";
String ncei_name "dissolved Oxygen 2";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "dissolved_oxygen_in_sea_water_2";
String units "umol/l";
Float64 valid_max 5.0865;
Float64 valid_min -9.99e-29;
}
oxygenSaturation {
Float64 _FillValue -9.99e-29;
Float64 actual_range 4.76715, 7.21353;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 8.0;
Float64 colorBarMinimum -2.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Dissolved O2";
String long_name "Oxygen saturation, Garcia & Gordon";
String ncei_name "Oxygen saturation";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "oxygen_saturation";
String units "ml/l";
Float64 valid_max 7.21353;
Float64 valid_min -9.99e-29;
}
density {
Float64 _FillValue -9.99e-29;
Float64 actual_range 1022.5753, 1034.9207;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 28.0;
Float64 colorBarMinimum 20.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Salinity";
String long_name "density";
String ncei_name "Density";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_density";
String units "kg/m^3";
Float64 valid_max 1034.9207;
Float64 valid_min 1022.5753;
}
wetCDOM {
Float64 _FillValue -9.99e-29;
Float64 actual_range 1.1736, 7.3482;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 8.0;
Float64 colorBarMinimum 0.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Optical Properties";
String long_name "CDOM concentration from fluorescence, WET Labs CDOM ";
String ncei_name "cdom_concentration_in_sea_water";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "cdom_concentration_in_sea_water";
String units "mg/m^3";
Float64 valid_max 7.3482;
Float64 valid_min 1.1736;
}
beamAttenuation {
Float64 _FillValue -9.99e-29;
Float64 actual_range 0.2901, 0.5558;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 500.0;
Float64 colorBarMinimum -500.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Heat Flux";
String long_name "Beam Attenuation, Chelsea/Seatech";
String ncei_name "Beam Attenuation";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "volume_beam_attenuation_coefficient_of_radiative_flux_in_sea_water";
String units "1/m";
Float64 valid_max 0.5558;
Float64 valid_min 0.2901;
}
beamTransmission {
Float64 _FillValue -9.99e-29;
Float64 actual_range 87.0277, 93.0038;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 100.0;
Float64 colorBarMinimum 0.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Optical Properties";
String long_name "Beam Transmission, Chelsea/Seatech";
String ncei_name "Beam Transmission";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "light_transmission";
String units "percent";
Float64 valid_max 93.0038;
Float64 valid_min 87.0277;
}
sigmat {
Float64 _FillValue -9.99e-29;
Float64 actual_range 22.573, 27.7334;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 28.0;
Float64 colorBarMinimum 20.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Unknown";
String long_name "density";
String ncei_name "Density";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_density";
String units "kg/m^3";
Float64 valid_max 27.7334;
Float64 valid_min 22.573;
}
sigmat2 {
Float64 _FillValue -9.99e-29;
Float64 actual_range 22.5724, 27.7344;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 28.0;
Float64 colorBarMinimum 20.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Unknown";
String long_name "density";
String ncei_name "Density";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "sea_water_density";
String units "kg/m^3";
Float64 valid_max 27.7344;
Float64 valid_min 22.5724;
}
altimeter {
Float64 _FillValue -9.99e-29;
Float64 actual_range 3.45, 121.07;
String ancillary_variables "unknown";
String axis "Z";
String cell_method "unknown";
Float64 colorBarMaximum 150.0;
Float64 colorBarMinimum 0.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String instrument "Seabird 911plus CTD";
String ioos_category "Unknown";
String long_name " Altimeter";
String ncei_name "Altimeter";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "altimeter";
String units "m";
Float64 valid_max 121.07;
Float64 valid_min 3.45;
}
soundVelocity1 {
Float64 _FillValue -9.99e-29;
Float64 actual_range 1487.24, 1532.91;
String ancillary_variables "unknown";
String cell_method "unknown";
Float64 colorBarMaximum 1540.0;
Float64 colorBarMinimum 1480.0;
String comment "unknown";
String coverage_content_type "physicalMeasurement";
String grid_mapping "crs";
String ioos_category "Currents";
String long_name "Sound Velocity [Chen-Millero]";
String ncei_name "Sound Velocity";
String references "unknown";
String source "CTD profiles from a ship";
String standard_name "speed_of_sound_in_sea_water ";
String units "m/s";
Float64 valid_max 1532.91;
Float64 valid_min 1487.24;
}
platform {
String call_sign "WCE5063";
String ioos_category "Unknown";
String ioos_code "urn:ioos:station:NCEI:Pelican";
String long_name "Platform";
}
instrument {
String ioos_category "Unknown";
String long_name "Seabird 911plus CTD";
String make_model "Seabird 911 plus";
}
crs {
Float64 actual_range 9.969209968386869e+36, 9.969209968386869e+36;
String epsg_code "EPSG:4326";
String grid_mapping_name "latitude_longitude";
String inverse_flattening "298.2572f";
String ioos_category "Unknown";
String long_name "CRS";
String longitude_of_prime_meridian "0.f";
String semi_major_axis "6378137.f";
}
}
NC_GLOBAL {
String acknowledgement "unknown";
String cdm_data_type "Profile";
String cdm_profile_variables "pressure, depth, depth2, temperature, temperature2, conductivity, conductivity2, salinity, salinity2, oxygen, oxygen2, oxygenSaturation, density, wetCDOM, beamAttenuation, beamTransmission, sigmat, sigmat2, altimeter, soundVelocity1";
String comment "unknown";
String comment1 "unknown";
String contributor_email "unknown";
String contributor_institution "unknown";
String contributor_name "unknown";
String contributor_phone "unknown";
String contributor_role "unknown";
String contributor_url "unknown";
String Conventions "CF-1.7, ACDD-1.3, COARDS";
String Country "USA";
String creator_email "arne.diercks@usm.edu";
String creator_institution "University of Southern Mississippi";
String creator_name "Arne Diercks";
String creator_phone "+1-662-915-2301";
String creator_role "Professor";
String creator_type "person";
String creator_url "https://www.usm.edu/faculty-directory/profile.php?id=1936002";
String date_created "2019-07-01T22:38:08Z";
String date_issued "2019-07-01T22:38:08Z";
String date_metadata_modified "2019-07-01T22:38:08Z";
String date_modified "2019-07-01T22:38:08Z";
String defaultGraphQuery "temperature,depth,profile&.draw=markers&.marker=5%7C5&.color=0x000000&.colorBar=%7C%7C%7C%7C%7C&.bgColor=0xffccccff&.yRange=%7C%7Cfalse";
Float64 Easternmost_Easting -88.409;
String featureType "Profile";
String geospatial_bounds "POLYGON ((29.2 -90.6, 29.2 -87.1, 27.4 -87.1, 27.4 -90.6, 29.2 -90.6))";
String geospatial_bounds_crs "EPSG:4326";
String geospatial_bounds_vertical_crs "EPSG:5831";
Float64 geospatial_lat_max 28.716;
Float64 geospatial_lat_min 28.716;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max -88.409;
Float64 geospatial_lon_min -88.409;
String geospatial_lon_units "degrees_east";
Float64 geospatial_vertical_max 1555.526;
Float64 geospatial_vertical_min 0.495;
String geospatial_vertical_positive "down";
Float64 geospatial_vertical_resolution 0.5000099678456591;
String geospatial_vertical_units "m";
String history
"20190701T223742
2025-11-18T17:12:16Z (local files)
2025-11-18T17:12:16Z https://erddap.griidc.org/erddap/tabledap/R1_x132_134_0051_33_cnv.html";
String id "PE_CTD";
String infoUrl "https://data.gulfresearchinitiative.org/data/R1.x132.134:0051";
String institution "University of Georgia / Department of Marine Sciences";
String instrument "Seabird SBE 911plus CTD";
String instrument_vocabulary "GCMD Earth Science Keywords. Version 8.1";
String keywords "911plus, acoustic, acoustics, altimeter, attenuation, beam, beam attenuation, beamAttenuation, beamTransmission, cast, cdom, cdom_concentration_in_sea_water, chelsea, chelsea/seatech, chen, chen-millero, coefficient, colored, concentration, conductivity, conductivity2, crs, ctd, currents, data, density, department, depth, depth2, dissolved, dissolved o2, dissolved_oxygen_in_sea_water, dissolved_oxygen_in_sea_water_2, earth, Earth Science > Oceans > Ocean Acoustics > Acoustic Velocity, Earth Science > Oceans > Ocean Optics > Attenuation/Transmission, Earth Science > Oceans > Ocean Optics > Radiance, Earth Science > Oceans > Ocean Pressure > Water Pressure, Earth Science > Oceans > Ocean Temperature > Water Temperature, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Density, Earth Science > Oceans > Salinity/Density > Salinity, electrical, fluorescence, flux, garcia, georgia, gordon, gulf, gulf of mexico, heat, heat flux, identifier, instrument, labs, latitude, light, light_transmission, longitude, macondo well, marine, matter, mexico, millero, O2, ocean, oceans, optical, optical properties, optics, organic, oxygen, oxygen2, oxygen_saturation, oxygenSaturation, pelican, platform, practical, pressure, pressure salinity, profile, properties, r/v, radiance, radiative, salinity, salinity2, saturation, science, sciences, sea, sea_water_density, sea_water_electrical_conductivity, sea_water_practical_salinity, sea_water_pressure, sea_water_temperature, sea_water_temperature_2, seabird, seatech, seawater, sensor, sigmat, sigmat2, sonde, sound, soundVelocity1, speed, speed_of_sound_in_sea_water, temperature, temperature2, time, transmission, university, v, velocity, volume, volume_beam_attenuation_coefficient_of_radiative_flux_in_sea_water, water, water column data, wet, wetCDOM";
String keywords_vocabulary "GCMD Science Keywords";
String license "Freely Distributed";
String metadata_link "https://data.gulfresearchinitiative.org/data/R1.x132.134:0051";
String naming_authority "naming_authority";
Float64 Northernmost_Northing 28.716;
String platform_vocabulary "GCMD Earth Science Keywords. Version 8.1";
String processing_level "Geophysical units from raw data";
String product_version "v0.0";
String program "The Gulf of Mexico Research Initiative (GOMRI)";
String project "Ecosystem Impacts of Oil and Gas Inputs to the Gulf (ECOGIG)";
String publisher_email "griidc@gomri.org";
String publisher_institution "Gulf of Mexico Research Initiative Information and Data (GRIIDC)";
String publisher_name "Gulf of Mexico Research Initiative Information and Data (GRIIDC)";
String publisher_phone "+1-301-713-3277";
String publisher_type "institution";
String publisher_udi "R1.x132.134:0051";
String publisher_url "https://data.gulfresearchinitiative.org";
String references "data.gomri.org";
String sea_name "Northern Gulf of Mexico";
String source "CTD profiles from a ship";
String sourceUrl "(local files)";
Float64 Southernmost_Northing 28.716;
String standard_name_vocabulary "CF Standard Name Table v29";
String subsetVariables "pressure, depth, depth2, temperature, temperature2, conductivity, conductivity2, salinity, salinity2, oxygen, oxygen2, oxygenSaturation, density, wetCDOM, beamAttenuation, beamTransmission, sigmat, sigmat2, altimeter, soundVelocity1";
String summary "Conductivity, temperature, and depth data collected during the R/V Pelican Cruise 2 weeks after the Deepwater Horizon accident. This dataset reports data from 32 Conductivity, Temperature, Depth (CTD) profiles collected around the Macondo well to establish a ground zero of the water column conditions as close to the time of the accident as possible. A 10 day cruise was split into 2 legs. Leg one was a sediment core collection and leg two was for a CTD survey of sites around the well head. This dataset was pre-ECOGIG and collected using National Institute for Undersea Science and Technology (NIUST) funding. unknown";
String time_coverage_duration "unknown";
String time_coverage_end "2010-05-12T16:05:51Z";
String time_coverage_resolution "unknown";
String time_coverage_start "2010-05-12T16:05:51Z";
String title "\"Profile - R1.x132.134.0051 - 33.cnv - 28.72N, 88.41W - 2010-05-12\"";
Float64 Westernmost_Easting -88.409;
}
}
Data Access Protocol (DAP) and its
selection constraints.
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.
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.