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Dataset Title:	Oceanographic data collected onboard SV Oceanolog during the Sail for Science - 2023 expedition in the Gulf of St. Lawrence
Institution:	Sail for Science (Dataset ID: sail_for_science_ctd)
Range:	longitude = -69.56934 to -69.1887°E, latitude = 47.8475 to 48.1335°N, depth = 0.493 to 8.922m
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

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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:

Web page authors can embed a graph of the latest data in a web page using HTML <img> tags.
Anyone can use ERDDAPs Slide Sorter to build a personal web page that displays graphs with the latest data (or other images or HTML content), each in its own, draggable slide.

The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  Label {
    String ioos_category "Unknown";
    String long_name "Label";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 47.8475, 48.1335;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range -69.56934, -69.1887;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  Instrument_Serial {
    Int32 _FillValue 2147483647;
    Int32 actual_range 210470, 210470;
    String ioos_category "Unknown";
    String long_name "Instrument Serial";
  }
  Instrument_Model {
    String ioos_category "Unknown";
    String long_name "Instrument Model";
  }
  Sensor_Serial {
    String ioos_category "Unknown";
    String long_name "Sensor Serial";
  }
  Sensor_Channel {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    String ioos_category "Unknown";
    String long_name "Channel";
  }
  time {
    String _CoordinateAxisType "Time";
    String axis "T";
    String ioos_category "Time";
    String long_name "Time";
    String source_name "Time";
    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";
  }
  Conductivity {
    Float32 actual_range 24.3631, 25.2024;
    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 "mS/cm";
  }
  Temperature {
    Float32 actual_range 12.3449, 18.8262;
    String ioos_category "Temperature";
    String long_name "Temperature";
    String standard_name "sea_water_temperature";
    String units "degree Celsius";
  }
  DO_Concentration {
    Float32 actual_range 246.55, 283.23;
    String ioos_category "Dissolved O2";
    String long_name "Dissolved Oxygen Concentration";
    String standard_name "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water";
    String units "µmol/L";
  }
  Backscatter {
    Float32 actual_range 0.00346, 0.29629;
    String ioos_category "Unknown";
    String long_name "Backscatter";
    String units "m⁻¹sr⁻¹";
  }
  Chlorophyll_a {
    Float32 actual_range 0.692, 37.819;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String ioos_category "Ocean Color";
    String long_name "Concentration Of Chlorophyll In Sea Water";
    String standard_name "concentration_of_chlorophyll_in_sea_water";
  }
  FDOM {
    Float32 actual_range 11.678, 18.478;
    String ioos_category "Unknown";
    String long_name "FDOM";
  }
  Sea_pressure {
    Float32 actual_range 0.497, 8.995;
    String ioos_category "Pressure";
    String long_name "Sea Pressure";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 0.493, 8.922;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "Depth";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  Salinity {
    Float32 actual_range 17.042, 20.802;
    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";
  }
  DO_saturation {
    Float32 actual_range 90.29, 97.28;
    String ioos_category "Unknown";
    String long_name "DO Saturation";
  }
  Density_anomaly {
    Float32 actual_range 11.4003, 15.5742;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum -10.0;
    String ioos_category "Physical Oceanography";
    String long_name "Density Anomaly";
  }
  QC_flag {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 150.0;
    Float64 colorBarMinimum 0.0;
    String ioos_category "Quality";
    String long_name "QC Flag";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "Point";
    String comment "##Limitations: No limitations";
    String contributor_name "Shkvorets, Igor;Troshyna, Iryna";
    String contributor_role "owner,custodian,principalInvestigator,distributor;coAuthor,editor";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_address "1 Harrogate Pl.";
    String creator_city "Ottawa";
    String creator_country "Canada";
    String creator_email "ishkvorets@gmail.com";
    String creator_institution "Sail for Science";
    String creator_name "Shkvorets, Igor";
    String creator_orcid "https://orcid.org/0009-0009-9728-1331";
    String creator_type "person";
    String creator_url "www.sailforscience.com";
    String date_modified "2026-01-08T21:11:31.892Z";
    Float64 Easternmost_Easting -69.1887;
    String featureType "Point";
    Float64 geospatial_lat_max 48.1335;
    Float64 geospatial_lat_min 47.8475;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -69.1887;
    Float64 geospatial_lon_min -69.56934;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 8.922;
    Float64 geospatial_vertical_min 0.493;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2026-03-11T13:44:22Z (local files)
2026-03-11T13:44:22Z https://dev.cioosatlantic.ca/tabledap/sail_for_science_ctd.das";
    String id "55a55292-716b-426a-8bce-a0a079a1074b";
    String infoUrl "www.sailforscience.com";
    String institution "Sail for Science";
    String keywords "chlorophyll a, CIOOS:dissolvedOrganicCarbon, CIOOS:other, CIOOS:oxygen, CIOOS:particulateMatter, CIOOS:seaSurfaceSalinity, CIOOS:seaSurfaceTemperature, CIOOS:subSurfaceSalinity, CIOOS:subSurfaceTemperature, conductivity, dissolved oxygen, fDOM, salinity, transmittance, water temperature";
    String keywords_vocabulary "CIOOS: CIOOS Essential Ocean Variables Vocabulary";
    String license "https://creativecommons.org/licenses/by-sa/4.0/";
    String metadata_form "https://cioos-siooc.github.io/metadata-entry-form#/en/atlantic/Ax18d8AulhTzQPzB9J3X5JG2Son2/-Od48XG-0i3iqxVT7VGm";
    String naming_authority "ca.cioos";
    Float64 Northernmost_Northing 48.1335;
    String product_version "1.1";
    String progress "completed";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 47.8475;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "Label, latitude, longitude, Instrument_Serial, Instrument_Model, Sensor_Serial, Sensor_Channel, QC_flag";
    String summary "Presented collected with RBRconcertoCTD a set of oceanographic data, including variables: conductivity, temperature, practical salinity, specific density, dissolved oxygen, transmittance, chlorophyll-a, fDOM at sampling rate 8Hz in the Gulf of St. Lawrence at the moorings of SV Oceanolog on the route: Rivière-du-Loup - Gaspe - Magdalen Is. - Cape North. This is a pilot stage's set of high-accuracy and resolution oceanographic data collected during the citizen science project Sail for Science underway to the Caribbean: www.sailforscience.com";
    String title "Oceanographic data collected onboard SV Oceanolog during the Sail for Science - 2023 expedition in the Gulf of St. Lawrence";
    Float64 Westernmost_Easting -69.56934;
  }
}

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.

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