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Dataset Title:  WCO - R.V. Plymouth Quest Underway Data Subscribe RSS
Institution:  Plymouth Marine Laboratory   (Dataset ID: Underway_1237_711d_c532)
Range: longitude = -5.337072 to -2.94362°E, latitude = 49.63452 to 50.367596°N, time = 2021-04-28T08:56:10Z to 2024-08-21T13:27:30Z
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Data Access Form | Files
 
Graph Type:  ?
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Y Axis: 
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Constraints ? Optional
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Things You Can Do With Your Graphs

Well, you can do anything you want with your graphs, of course. But some things you might not have considered are:

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.61960017e+9, 1.72424685e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Date (UTC)";
    String source_name "Date (UTC)";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01T00:00:00Z";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 49.63452, 50.367596;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String source_name "Lat (degN)";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -5.337072, -2.94362;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String source_name "Lon (degE)";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Cor_Wind_Dir {
    Int16 _FillValue 32767;
    Int16 actual_range 0, 359;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Wind";
    String long_name "Wind From Direction";
    String standard_name "wind_from_direction";
    String units "degrees";
  }
  Cor_Wind_speed {
    Float32 actual_range 0.0, 32.27;
    Float64 colorBarMaximum 15.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Wind";
    String long_name "Wind Speed";
    String standard_name "wind_speed";
    String units "m/s";
  }
  Pressure {
    Float32 actual_range 994.6, 1029.9;
    String ioos_category "Pressure";
    String long_name "Pressure (h Pa)";
    String units "h Pa";
  }
  Humidity {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 52, 100;
    String ioos_category "Meteorology";
    String long_name "Humidity (%)";
    String units "%";
  }
  Air_T {
    Float32 actual_range 6.0, 23.6;
    String ioos_category "Unknown";
    String long_name "Air T (deg C)";
    String units "degC";
  }
  Dew_T {
    Float32 actual_range 2.8, 20.7;
    String ioos_category "Unknown";
    String long_name "Dew T (deg C)";
    String units "degC";
  }
  Chlor {
    Float32 actual_range 0.0484, 6.0984;
    String ioos_category "Ocean Color";
    String long_name "Chlor (mg/m3)";
    String units "mg/m3";
  }
  CDOM {
    Float64 actual_range -0.0899, 8.091;
    String ioos_category "Ocean Color";
    String long_name "Chromophoric Dissolved Organic Material";
    String units "QSU";
  }
  Turb {
    Float64 actual_range 0.2257, 17.6046;
    String ioos_category "Unknown";
    String long_name "Turb (NTU)";
    String units "NTU";
  }
  Sea_Temperature {
    Float32 actual_range 10.0443, 22.3081;
    String ioos_category "Temperature";
    String long_name "Sea Temperature (deg C)";
    String units "degC";
  }
  Conductivity {
    Float32 actual_range 1.90003, 4.91487;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 30.0;
    String ioos_category "Salinity";
    String long_name "Sea Water Electrical Conductivity";
    String standard_name "sea_water_electrical_conductivity";
    String units "s/m";
  }
  Salinity {
    Float32 actual_range 15.7732, 35.3268;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String ioos_category "Salinity";
    String long_name "Sea Water Practical Salinity";
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
  }
  Inlet_Temperature {
    Float32 actual_range 10.04, 21.458;
    String ioos_category "Temperature";
    String long_name "Inlet Temperature (deg C)";
    String units "degC";
  }
  Transmittance {
    Float64 actual_range 0.0, 0.8509356575237119;
    String ioos_category "Unknown";
    String long_name "Transmittance (%)";
    String units "%";
  }
  Oxygen {
    Float32 actual_range 141.82, 352.66;
    String ioos_category "Dissolved O2";
    String long_name "Oxygen (u M)";
    String units "uM";
  }
  PAR {
    Float64 actual_range -12.739999999999998, 4429.1;
    String ioos_category "Unknown";
    String long_name "S)";
    String units "uE/m2/s";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Other";
    String Conventions "COARDS, CF-1.6, ACDD-1.3";
    String creator_name "Plymouth Marine Laboratory";
    String creator_url "https://www.westernchannelobservatory.org.uk/quest_underway.php";
    Float64 Easternmost_Easting -2.94362;
    Float64 geospatial_lat_max 50.367596;
    Float64 geospatial_lat_min 49.63452;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -2.94362;
    Float64 geospatial_lon_min -5.337072;
    String geospatial_lon_units "degrees_east";
    String history 
"2025-12-06T04:33:48Z (local files)
2025-12-06T04:33:48Z https://erddap.eofrom.space/tabledap/Underway_1237_711d_c532.das";
    String infoUrl "https://www.westernchannelobservatory.org.uk/quest_underway.php";
    String institution "Plymouth Marine Laboratory";
    String keywords "air, Air_T, atmosphere, atmospheric, available, CDOM, chlor, chlorophyll, chromophoric, color, colored, conductivity, Cor_Wind_Dir, Cor_Wind_speed, data, date, density, dew, Dew_T, direction, dissolved, dissolved o2, earth, Earth Science > Atmosphere > Atmospheric Winds > Surface Winds, Earth Science > Oceans > Salinity/Density > Conductivity, Earth Science > Oceans > Salinity/Density > Salinity, electrical, humidity, inlet, Inlet_Temperature, laboratory, latitude, longitude, marine, material, matter, meteorology, mg/m3, nephelometric, ntu, O2, ocean, ocean color, oceans, organic, oxygen, PAR, percent, photosynthetically, plymouth, practical, pressure, quest, r.v, radiation, salinity, science, sea, Sea_Temperature, sea_water_electrical_conductivity, sea_water_practical_salinity, seawater, speed, surface, temperature, time, transmittance, turb, turbidity, u, underway, units, water, wind, wind_from_direction, wind_speed, winds";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "OGL - https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/";
    Float64 Northernmost_Northing 50.367596;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 49.63452;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String summary "The R.V. Plymouth Quest is fitted with an underway suite of sensors, which continuously sample from the vessels non-toxic underway water supply.";
    String testOutOfDate "now-43days";
    String time_coverage_end "2024-08-21T13:27:30Z";
    String time_coverage_start "2021-04-28T08:56:10Z";
    String title "WCO - R.V. Plymouth Quest Underway Data";
    Float64 Westernmost_Easting -5.337072;
  }
}

 

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.

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.


 
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