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Dataset Title:	Maritimes Region Glider Delayed Mode Data Mira-SEA019 20190506
Institution:	Bedford Institute of Oceanography (Dataset ID: bio_maritimes_glider_MiraSEA019_20190506)
Range:	longitude = -63.40767 to -63.377846°E, latitude = 44.31755 to 44.424313°N, time = 2019-05-06T14:44:54Z to 2019-05-07T12:07:43Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.557153894528e+9, 1.557230863125e+9;
    String axis "T";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "Time elapsed since 1970-01-01T00:00:00Z.";
    String observation_type "measured";
    String source "Timestamp";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
    String unitsVocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UTBB/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/TIME/";
  }
  BBP700 {
    Float64 _FillValue NaN;
    Float64 actual_range 8.1964e-5, 0.00828894;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum -10.0;
    String instrument "instrument_fluorometers";
    String ioos_category "Unknown";
    String long_name "Particle backscattering at 700 nanometers";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String source "FLBBCD_BB_700_SCALED";
    String units "m-1 sr-1";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/PMSR/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/BBP700/";
  }
  CDOM {
    Float64 _FillValue NaN;
    Float64 actual_range -1.5334, 8.9298;
    String instrument "instrument_fluorometers";
    String ioos_category "Unknown";
    String long_name "Concentration of coloured dissolved organic matter in sea water";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String source "FLBBCD_CDOM_SCALED";
    String units "ppb";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UPPB/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/CDOM/";
  }
  CHLA {
    Float64 _FillValue NaN;
    Float64 actual_range 0.0605, 2.8435;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String instrument "instrument_fluorometers";
    String ioos_category "Ocean Color";
    String long_name "Chlorophyll-A";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String source "FLBBCD_CHL_SCALED";
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "mg/m^3";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UMMC/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/CHLA/";
  }
  FREQUENCY_DOXY {
    Float64 _FillValue NaN;
    Float64 actual_range 2809.38, 4620.55;
    String calculate_oxygenConcentration "sbe43Fhz2conc";
    String instrument "instrument_dissolvedgassensors";
    String ioos_category "Dissolved O2";
    String long_name "Frequency reported by oxygen sensor";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String source "GPCTD_DOF";
    String units "Hz";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UTHZ/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/FREQDOXY/";
  }
  GLIDER_HEADING {
    Float64 _FillValue NaN;
    Float64 actual_range 0.10018797363200001, 359.74981;
    String ioos_category "Unknown";
    String long_name "Orientation (horizontal relative to magnetic north) of measurement platform {heading} by compass";
    String observation_type "measured";
    String platform "platform";
    String source "Heading";
    String units "degrees";
    String unitsVocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UAAA/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/HEADING/";
  }
  GLIDER_PITCH {
    Float64 _FillValue NaN;
    Float64 actual_range -83.09134234432, 30.970728;
    String ioos_category "Unknown";
    String long_name "Orientation (pitch) of measurement platform by inclinometer";
    String observation_type "measured";
    String platform "platform";
    String source "Pitch";
    String standard_name "platform_pitch";
    String units "deg";
    String unitsVocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UAAA/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/PITCH/";
  }
  GLIDER_ROLL {
    Float64 _FillValue NaN;
    Float64 actual_range -14.818936, 58.984881316736;
    String ioos_category "Unknown";
    String long_name "Orientation (roll angle) of measurement platform by inclinometer";
    String observation_type "measured";
    String platform "platform";
    String source "Roll";
    String standard_name "platform_roll";
    String units "deg";
    String unitsVocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UAAA/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/ROLL/";
  }
  NavState {
    Float64 _FillValue NaN;
    Float64 actual_range 100.0, 118.0;
    String ioos_category "Statistics";
    String long_name "Nav State";
    String observation_type "measured";
    String platform "platform";
    String source "NavState";
  }
  CNDC {
    Float64 _FillValue NaN;
    Float64 accuracy 3.0e-4;
    Float64 actual_range 2.63309, 3.49692;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 30.0;
    String instrument "instrument_ctd";
    String ioos_category "Salinity";
    String long_name "Electrical conductivity";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String replaceName "CNDC";
    String source "GPCTD_CONDUCTIVITY";
    String standard_name "sea_water_electrical_conductivity";
    String units "S m-1";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UECA/";
    Float64 valid_max 9.0;
    Float64 valid_min 0.0;
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/CNDC/";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 44.31755, 44.42431377422157;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String conversion "nmea2deg";
    String coordinate_reference_frame "urn: ogc:crs: EPSG::4326";
    String ioos_category "Location";
    String long_name "Latitude north";
    String observation_type "measured";
    String platform "platform";
    String references "WGS84";
    String source "NAV_LATITUDE";
    String standard_name "latitude";
    String units "degrees_north";
    String unitsVocabulary "https://vocab.nerc.ac.uk/collection/P06/current/DEGN/";
    Float64 valid_max 90.0;
    Float64 valid_min -90.0;
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/LAT/";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -63.407667875588395, -63.37784433685631;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String conversion "nmea2deg";
    String coordinate_reference_frame "urn: ogc:crs: EPSG::4326";
    String ioos_category "Location";
    String long_name "Longitude east";
    String observation_type "measured";
    String platform "platform";
    String references "WGS84";
    String source "NAV_LONGITUDE";
    String standard_name "longitude";
    String units "degrees_east";
    String unitsVocabulary "https://vocab.nerc.ac.uk/collection/P06/current/DEGE/";
    Float64 valid_max 180.0;
    Float64 valid_min -180.0;
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/LON/";
  }
  PRES {
    Float64 _FillValue NaN;
    Float64 accuracy 0.1;
    Float64 actual_range 0.06, 120.89;
    Float64 colorBarMaximum 5000.0;
    Float64 colorBarMinimum 0.0;
    String instrument "instrument_ctd";
    String ioos_category "Sea Level";
    String long_name "Sea water pressure, equals 0 at sea-level";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String positive "down";
    String reference_datum "sea-surface";
    String replaceName "PRES";
    String source "GPCTD_PRESSURE";
    String standard_name "sea_water_pressure";
    String units "dbar";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UPDB/";
    Float64 valid_max 1000.0;
    Float64 valid_min 0.0;
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/PRES/";
  }
  TEMP {
    Float64 _FillValue NaN;
    Float64 accuracy 0.002;
    Float64 actual_range 0.0301, 7.8965;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String instrument "instrument_ctd";
    String ioos_category "Temperature";
    String long_name "Sea temperature in-situ ITS-90 scale";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String replaceName "TEMP";
    String source "GPCTD_TEMPERATURE";
    String standard_name "sea_water_temperature";
    String units "degree_C";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UPAA/";
    Float64 valid_max 42.0;
    Float64 valid_min -5.0;
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/TEMP/";
  }
  profile_index {
    Float64 _FillValue NaN;
    Float64 actual_range 1.0, 134.0;
    String comment "N = inside profile N, N + 0.5 = between profiles N and N + 1";
    Float64 filt_length 20;
    String ioos_category "Unknown";
    String long_name "profile index";
    String method "get_profiles_new";
    Float64 min_dp 10.0;
    Float64 min_nsamples 100;
    String sources "time pressure";
    String units "1";
  }
  PROFILE_DIRECTION {
    Float64 _FillValue NaN;
    Float64 actual_range -1.0, 1.0;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String comment "-1 = ascending, 0 = inflecting or stalled, 1 = descending";
    String ioos_category "Currents";
    String long_name "Vertical direction of profile";
    String method "get_profiles_new";
    String sources "time pressure";
    String units "1";
  }
  PSAL {
    Float64 _FillValue NaN;
    Float64 accuracy 0.01;
    Float64 actual_range 30.351464890052075, 33.79182810459217;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String comment "raw, uncorrected salinity";
    String instrument "instrument_ctd";
    String ioos_category "Salinity";
    String long_name "water salinity";
    String method "get_derived_eos_raw";
    Float64 missing_value NaN;
    String observation_type "calulated";
    String platform "platform";
    Float64 precision 0.01;
    String sources "conductivity temperature pressure";
    String standard_name "sea_water_practical_salinity";
    String units "Dmnless";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/UUUU/";
    Float64 valid_max 40.0;
    Float64 valid_min 0.0;
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/PSAL/";
  }
  DOXY {
    Float64 _FillValue NaN;
    Float64 actual_range 183.7660107886605, 370.788071680847;
    String instrument "instrument_dissolvedgassensors";
    String ioos_category "Dissolved O2";
    String long_name "dissolved oxygen concentration";
    String method "sbe43Fhz2conc";
    Float64 missing_value NaN;
    String observation_type "calulated";
    String platform "platform";
    String sources "salinity temperature pressure longitude latitude";
    String standard_name "moles_of_oxygen_per_unit_mass_in_sea_water";
    String units "µmole/kg";
    String unitsvocabulary "https://vocab.nerc.ac.uk/collection/P06/current/KGUM/";
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/DOXY/";
  }
  LONGITUDE_GPS {
    Float32 _FillValue NaN;
    Float32 actual_range -63.40765, -63.37787;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String coordinate_reference_frame "urn: ogc:crs: EPSG::4326";
    String ioos_category "Location";
    String long_name "Longitude east by unspecified GPS system";
    String observation_type "measured and interpolated";
    String references "WGS84";
    String standard_name "longitude";
    String units "degrees_east";
    String unitsVocabulary "https://vocab.nerc.ac.uk/collection/P06/current/DEGE/";
    Float32 valid_max 180.0;
    Float32 valid_min -180.0;
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/LON_GPS/";
  }
  LATITUDE_GPS {
    Float32 _FillValue NaN;
    Float32 actual_range 44.31755, 44.42427;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String coordinate_reference_frame "urn: ogc:crs: EPSG::4326";
    String ioos_category "Location";
    String long_name "Latitude north by unspecified GPS system";
    String observation_type "measured and interpolated";
    String references "WGS84";
    String standard_name "latitude";
    String units "degrees_north";
    String unitsVocabulary "https://vocab.nerc.ac.uk/collection/P06/current/DEGN/";
    Float32 valid_max 90.0;
    Float32 valid_min -90.0;
    String vocabulary "https://vocab.nerc.ac.uk/collection/OG1/current/LAT_GPS/";
  }
  profile_id {
    Int32 _FillValue -1;
    Int32 actual_range 1, 134;
    String cf_role "trajectory_id";
    Float64 colorBarMaximum 2.5e+9;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Identifier";
    String long_name "Profile ID";
    String observation_type "calculated";
    String platform "platform";
    Int32 valid_max 2147483647;
    Int32 valid_min 1;
  }
 }
  NC_GLOBAL {
    String acknowledgement "Funding from Fisheries and Oceans Canada.";
    String cdm_data_type "Trajectory";
    String cdm_trajectory_variables "profile_id";
    String comment "Sampling on up cast only. Dataline shift observed in raw files, meaning that file headers do not align with rows of data.";
    String contributing_institutions "Bedford Institute of Oceanography, Bedford Institute of Oceanography";
    String contributing_institutions_role "Operator, PI";
    String contributing_institutions_role_vocabulary "https://vocab.nerc.ac.uk/collection/W08/current/CONT0003/, https://vocab.nerc.ac.uk/collection/W08/current/CONT0004/";
    String contributing_institutions_vocabulary "https://edmo.seadatanet.org/report/1811, https://edmo.seadatanet.org/report/1811";
    String contributor_name "David Hebert, Chantelle Layton";
    String contributor_role "PI, Operator";
    String contributor_role_vocabulary "https://vocab.nerc.ac.uk/collection/W08/current/CONT0004/, https://vocab.nerc.ac.uk/collection/W08/current/CONT0003/";
    String Conventions "CF-1.10, COARDS, ACDD-1.3";
    String creator_email "[email protected]";
    String creator_name "Bedford Institute of Oceanography";
    String creator_url "https://www.bio.gc.ca/index-en.php";
    String data_mode "P";
    String date_created "2026-05-13T17:49:49Z";
    String date_issued "2026-05-13T17:49:49Z";
    String date_modified "2026-05-13T17:50:02Z";
    String deployment_end "2019-05-07T13:00:27.835000000";
    Float64 deployment_id 60;
    String deployment_name "dfo-Mira019-20190506";
    String deployment_start "2019-05-06T14:19:04.907000000";
    String deployment_vessel "CCGS Sigma T";
    Float64 Easternmost_Easting -63.37784433685631;
    String featureType "Trajectory";
    Float64 geospatial_lat_max 44.42431377422157;
    Float64 geospatial_lat_min 44.31755;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -63.37784433685631;
    Float64 geospatial_lon_min -63.407667875588395;
    String geospatial_lon_units "degrees_east";
    String glider_instrument_name "SeaExplorer";
    String glider_model "SeaExplorer";
    String glider_name "Mira";
    String glider_serial "SEA019";
    Float64 glider_wmo 4800925;
    String history 
"CPROOF glider toolbox pyglider version: 0.0.7
2026-06-14T09:00:47Z (local files)
2026-06-14T09:00:47Z https://cioosatlantic.ca/tabledap/bio_maritimes_glider_MiraSEA019_20190506.das";
    String ices_code "182V";
    String id "MiraSEA019-20190506T1419";
    String infoUrl "https://www.bio.gc.ca/index-en.php";
    String institution "Bedford Institute of Oceanography";
    String institution_vocabulary "https://edmo.seadatanet.org/report/1811";
    String instrument_ctd "{'calibration_date': '2018-12-05', 'calibration_report': '\"GPCTD_0186_20181113_P.pdf, GPCTD_0186_20181205_C.pdf, GPCTD_0186_20181205_T.pdf\"', 'comment': ' ', 'factory_calibrated': 'yes', 'long_name': 'Sea-Bird SBE Glider Payload CTD (GPCTD)', 'make': 'Sea-Bird Scientific', 'makeVocabulary': 'https://vocab.nerc.ac.uk/collection/L35/current/MAN0013/', 'make_model': 'Sea-Bird Scientific SBE GPCTD', 'model': 'SBE GPCTD', 'modelVocabulary': 'https://vocab.nerc.ac.uk/collection/L22/current/TOOL1026/', 'platform': 'platform', 'serial_number': '\"0186\"', 'type': 'platform'}";
    String instrument_dissolvedgassensors "{'calibration_coefficients': {'A': -0.00377, 'B': 0.000117, 'C': -1.3298e-06, 'Enom': 0.036, 'Foffset': -835.35, 'Soc': 0.00028895, 'Tau20': 1.16}, 'calibration_date': '2018-12-19', 'calibration_report': '\"43F_3338_20181219.pdf, 43F_3338_20181219_SOCAdjusted.pdf\"', 'calibration_sourceVars': {'conductivity': 'GPCTD_CONDUCTIVITY', 'pressure': 'GPCTD_PRESSURE', 'temperature': 'GPCTD_TEMP'}, 'comment': ' ', 'factory_calibrated': 'yes', 'long_name': 'Sea-Bird SBE 43F Dissolved Oxygen Sensor', 'make': 'Sea-Bird Scientific', 'makeVocabulary': 'https://vocab.nerc.ac.uk/collection/L35/current/MAN0013/', 'make_model': 'Sea-Bird Scientific SBE 43F DO', 'model': 'SBE 43F DO', 'modelVocabulary': 'https://vocab.nerc.ac.uk/collection/L22/current/TOOL0037/', 'platform': 'platform', 'serial_number': '\"43-3338\"', 'type': 'platform'}";
    String instrument_fluorometers "{'calibration_date': '2016-11-17', 'calibration_report': '\"FLBBCD_4551_20161117.pdf\"', 'comment': ' ', 'factory_calibrated': 'yes', 'long_name': 'WET Labs {Sea-Bird WETLabs} ECO FLBBCD scattering fluorescence sensor', 'make': 'WET Labs', 'makeVocabulary': 'https://vocab.nerc.ac.uk/collection/L35/current/MAN0026/', 'make_model': 'WET Labs WET Labs ECO FLBBCD', 'model': 'WET Labs ECO FLBBCD', 'modelVocabulary': 'https://vocab.nerc.ac.uk/collection/L22/current/TOOL1141/', 'platform': 'platform', 'serial_number': '\"4551\"', 'type': 'platform'}";
    String internal_mission_identifier "GLD2019SEA019M60";
    String keywords "00z, 01t00, 1970-01-01t00, 20190506t1419, angle, autonomous, auvs, AUVS > Autonomous Underwater Vehicles, backscattering, BBP700, bedford, CDOM, chemistry, CHLA, chlorophyll, chlorophyll-a, CNDC, color, colored, coloured, compass, concentration, concentration_of_chlorophyll_in_sea_water, conductivity, currents, data, density, department, dfo, direction, dissolved, dissolved o2, DOXY, earth, Earth Science > Oceans > Ocean Chemistry > Chlorophyll, Earth Science > Oceans > Ocean Chemistry > Oxygen, 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 > Salinity, east, elapsed, electrical, equals, fisheries, frequency, FREQUENCY_DOXY, GLIDER_HEADING, GLIDER_PITCH, GLIDER_ROLL, global, gps, heading, horizontal, identifier, in-situ, inclinometer, index, institute, its, its-90, latitude, LATITUDE_GPS, level, longitude, LONGITUDE_GPS, magnetic, mass, matter, measurement, mirasea019, mirasea019-20190506t1419, moles, moles_of_oxygen_per_unit_mass_in_sea_water, nanometers, nav, NavState, north, O2, ocean, ocean color, oceanography, oceans, organic, orientation, oxygen, particle, per, pitch, platform, platform_pitch, platform_roll, positioning, practical, PRES, pressure, profile, PROFILE_DIRECTION, profile_id, profile_index, PSAL, relative, reported, roll, salinity, salinity/density, scale, science, sea, sea level, sea-level, sea_water_electrical_conductivity, sea_water_practical_salinity, sea_water_pressure, sea_water_temperature, seawater, sensor, since, situ, state, statistics, system, TEMP, temperature, time, underwater, unit, vehicles, vertical, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "Open Government Licence - Canada";
    String netcdf_version "4.0";
    String network "OceanGliders > BOON > Northwest Atlantic Ocean";
    Float64 Northernmost_Northing 44.42431377422157;
    String platform "sub-surface gliders";
    String platform_model "SeaExplorer";
    String platform_name "Mira";
    String platform_serial_number "019";
    String platform_type "SeaExplorer Glider";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/27/";
    Float64 pressure_maximum 672;
    Float64 pressure_minimum 0;
    String processing_level "Level 0 (L0) processed data timeseries; no corrections or data screening";
    String project "Atlantic Zone Monitoring Program";
    String project_url "https://www.dfo-mpo.gc.ca/science/data-donnees/azmp-pmza/index-eng.html";
    String publisher_email "[email protected]";
    String publisher_name "Bedford Institute of Oceanography";
    String publisher_url "https://www.bio.gc.ca/index-en.php";
    String recovery_vessel "CCGS Sigma T";
    String sea_name "Northwest Atlantic Ocean (limit-40 W)";
    String source "Observational data from a profiling glider.";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 44.31755;
    String standard_name_vocabulary "CF Standard Name Table v72";
    String subsetVariables "profile_index, PROFILE_DIRECTION, profile_id";
    String summary "Department of Fisheries and Oceans (DFO) COGG. Bedford Institute of Oceanography data from a local source.";
    String time_coverage_end "2019-05-07T12:07:43Z";
    String time_coverage_start "2019-05-06T14:44:54Z";
    String title "Maritimes Region Glider Delayed Mode Data Mira-SEA019 20190506";
    Float64 Westernmost_Easting -63.407667875588395;
    Float64 wmo_id 4800925;
    Float64 wmo_identifier 4800925;
  }
}

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.