Make A Graph

Dataset Title:	SGDO-Données CTD \| OMDS-CTD data
Institution:	Fisheries and Oceans Canada (Dataset ID: mpoSgdoCtdAgg)
Range:	longitude = -94.21583 to -40.82833°E, latitude = 32.15767 to 65.14529°N, depth = -841.35 to 4114.59m, time = 1982-03-17T23:25:00Z to 2024-04-03T13:25:42Z
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form

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Server-side Functions

distinct()

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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 {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 3.852555e+8, 1.712150742e+9;
    String axis "T";
    Float64 colorBarMaximum 4.0e+8;
    Float64 colorBarMinimum 3.85e+8;
    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";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue -9999.0;
    Float64 actual_range 32.15767, 65.14529;
    String axis "Y";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue -9999.0;
    Float64 actual_range -94.21583, -40.82833;
    String axis "X";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue -9999.0;
    Float64 actual_range -841.35, 4114.59;
    String axis "Z";
    String colorBarPalette "TopographyDepth";
    String coverage_content_type "coordinate";
    String generic_name "depth";
    String ioos_category "Location";
    String legacy_GF3_code "SDN:GF3::DEPH";
    String long_name "depth below surface";
    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 by profiling pressure sensor and conversion to seawater depth using UNESCO
        algorithm";
    String sdn_parameter_urn "SDN:P01::DEPHPR01";
    String sdn_uom_name "Metres";
    String sdn_uom_urn "SDN:P06::ULAA";
    String sensor_type "ctd";
    String standard_name "depth";
    String units "m";
  }
  DEPHPR01_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String flag_meanings 
"no_quality_control value_seems_correct
                value_appears_inconsistent_with_other_values value_seems_doubtful
                value_seems_erroneous
                value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "depth_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for DEPHPR01";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  PRESPR01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -846.77, 4192.0;
    String ancillary_variables "PRESPR01_QC";
    String generic_name "pressure";
    String legacy_GF3_code "SDN=GF3==PRES";
    String long_name "pressure";
    String positive "down";
    String sdn_parameter_name 
"Pressure (spatial coordinate) exerted by the water body
                by profiling
                pressure sensor and correction to read zero at sea level";
    String sdn_parameter_urn "SDN=P01==PRESPR01";
    String sdn_uom_name "decibar";
    String sdn_uom_urn "SDN=P06==UPDB";
    String standard_name "sea_water_pressure";
    String units "dbar";
  }
  PRESPR01_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String flag_meanings 
"no_quality_control value_seems_correct
                value_appears_inconsistent_with_other_values value_seems_doubtful
                value_seems_erroneous
                value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "pressure_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for PRESPR01";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  IRRDPP01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -1342.537, 9999.0;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String generic_name "irradiance (PAR)";
    String legacy_GF3_code "SDN=GF3==";
    String long_name "irradiance (PAR)";
    String sdn_parameter_name 
"Downwelling 2-pi scalar irradiance as photons of
                electromagnetic radiation (PAR wavelengths) in the water body by 2-pi scalar
                radiometer";
    String sdn_parameter_urn "SDN=P01==";
    String sdn_uom_name "MicroEinsteins per square metre per second";
    String sdn_uom_urn "SDN=P06==UMES";
    String standard_name "downwelling_photosynthetic_photon_spherical_irradiance_in_sea_water\"";
    String units "MicroEinsteins m-2 s-1";
  }
  IRRDSS01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -2260.0, 4912.9;
    Float64 colorBarMaximum 100.0;
    Float64 colorBarMinimum 0.0;
    String generic_name "surface irradiance (PAR)";
    String legacy_GF3_code "SDN=GF3==SPAR";
    String long_name "surface irradiance (PAR)";
    String sdn_parameter_name 
"Downwelling 2-pi scalar irradiance as photons of
                electromagnetic radiation (PAR wavelengths) in the atmosphere by 2-pi scalar
                radiometer";
    String sdn_parameter_urn "SDN=P01==IRRDSS01";
    String sdn_uom_name "MicroEinsteins per square metre per second";
    String sdn_uom_urn "SDN=P06==UMES";
    String units "MicroEinsteins m-2 s-1";
  }
  TEMPS901 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -83.71, 98.9762;
    String ancillary_variables "TEMPS901_QC";
    String generic_name "temperature";
    String legacy_GF3_code "SDN=GF3==TE90";
    String long_name "temperature";
    String sdn_parameter_name "Temperature (ITS-90) of the water body by CTD or STD";
    String sdn_parameter_urn "SDN=P01==TEMPS901";
    String sdn_uom_name "Celsius degree";
    String sdn_uom_urn "SDN=P06==UPAA";
    String standard_name "sea_water_temperature";
    String units "degree_C";
  }
  TEMPS901_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String flag_meanings 
"no_quality_control value_seems_correct
                value_appears_inconsistent_with_other_values value_seems_doubtful
                value_seems_erroneous
                value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "temperature_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for TEMPS901";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  CPHLPR01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -116.6, 1097.67;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String generic_name "fluorescence";
    String legacy_GF3_code "SDN=GF3==FLOR";
    String long_name "sea water fluorescence";
    String sdn_parameter_name 
"Concentration of chlorophyll-a {chl-a CAS 479-61-8} per
                unit volume
                of the water body [particulate >unknown phase] by in-situ chlorophyll fluorometer";
    String sdn_parameter_urn "SDN=P01==CPHLPR01";
    String sdn_uom_name "Milligrams per cubic metre";
    String sdn_uom_urn "SDN=P06==UMMC";
    String standard_name "mass_concentration_of_chlorophyll_in_sea_water";
    String units "mg m-3";
  }
  TURBPR01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -13.973, 660.732;
    String generic_name "turbidity";
    String legacy_GF3_code "SDN=GF3==TRB_";
    String long_name "turbidity";
    String sdn_parameter_name 
"Turbidity of water in the water body by in-situ optical
                backscatter
                measurement and laboratory calibration against formazin";
    String sdn_parameter_urn "SDN=P01==TURBPR01";
    String sdn_uom_name "NTU";
    String sdn_uom_urn "SDN=P06==USTU";
    String standard_name "sea_water_turbidity";
    String units "NTU";
  }
  PHXXPR01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -3.056, 16.894;
    String ancillary_variables "PHXXPR01_QC";
    String generic_name "pH";
    String legacy_GF3_code "SDN=GF3==PHPH";
    String long_name "pH";
    String sdn_parameter_name "pH (unspecified scale) of the water body by pH electrode";
    String sdn_parameter_urn "SDN=P01==PHXXPR01";
    String sdn_uom_name "pH units";
    String sdn_uom_urn "SDN=P06==UUPH";
    String units "pH units";
  }
  PHXXPR01_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String flag_meanings 
"no_quality_control value_seems_correct
                value_appears_inconsistent_with_other_values value_seems_doubtful
                value_seems_erroneous
                value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "pH_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for PHXXPR01";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  PSALST01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -19.4367, 485.678;
    String ancillary_variables "PSALST01_QC";
    String generic_name "salinity";
    String legacy_GF3_code "SDN=GF3==PSAL";
    String long_name "salinity";
    String sdn_parameter_name 
"Practical salinity of the water body by CTD and
                computation using
                UNESCO 1983 algorithm";
    String sdn_parameter_urn "SDN=P01==PSALST01";
    String sdn_uom_urn "SDN=P06==UUUU";
    String standard_name "sea_water_practical_salinity";
    String units "PSS-78";
  }
  PSALST01_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String flag_meanings 
"no_quality_control value_seems_correct
                value_appears_inconsistent_with_other_values value_seems_doubtful
                value_seems_erroneous
                value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "salinity_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for PSALST01";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  SIGTEQST {
    Float64 _FillValue -9999.0;
    Float64 actual_range -448.345, 447.323;
    String ancillary_variables "SIGTEQST_QC";
    String generic_name "sigmat-t";
    String legacy_GF3_code "SDN=GF3==SIGT";
    String long_name "sigmat-t";
    String sdn_parameter_name 
"Sigma-T of the water body by computation from salinity
                and
                temperature using UNESCO algorithm";
    String sdn_parameter_urn "SDN=P01==SIGTEQST";
    String sdn_uom_name "Kilograms per cubic metre";
    String sdn_uom_urn "SDN=P06==UKMC";
    String standard_name "sea_water_sigma_t";
    String units "kg m-3";
  }
  SIGTEQST_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String flag_meanings 
"no_quality_control value_seems_correct
                value_appears_inconsistent_with_other_values value_seems_doubtful
                value_seems_erroneous
                value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "sigmat-t_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for SIGTEQST";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  DOXYZZ01 {
    Float64 _FillValue -9999.0;
    Float64 actual_range -69.274, 983.9;
    String ancillary_variables "DOXYZZ01_QC";
    String generic_name "dissolved oxygen";
    String legacy_GF3_code "SDN=GF3==DOXY";
    String long_name "dissolved oxygen";
    String sdn_parameter_name 
"Concentration of oxygen {O2 CAS 7782-44-7} per unit
                volume of the
                water body [dissolved plus reactive particulate phase] by in-situ sensor";
    String sdn_parameter_urn "SDN=P01==DOXYZZ01";
    String sdn_uom_name "milliliters per litre";
    String sdn_uom_urn "SDN=P06==UMLL";
    String standard_name "volume_fraction_of_oxygen_in_sea_water";
    String units "ml l-1";
  }
  DOXYZZ01_QC {
    Byte _FillValue 127;
    String _Unsigned "false";
    Byte actual_range 0, 9;
    String flag_meanings 
"no_quality_control value_seems_correct
                value_appears_inconsistent_with_other_values value_seems_doubtful
                value_seems_erroneous
                value_was_modified value_missing";
    String flag_reference "BODC SeaDataNet";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String generic_name "dissolved oxygen_QC";
    String legacy_GF3_code "SDN=GF3==QQQQ";
    String long_name "Quality flag for DOXYZZ01";
    String sdn_parameter_name "QC flag";
    String sdn_parameter_urn "SDN:P02::ACFL";
    String standard_name "quality_flag";
  }
  station {
  }
  chief_scientist {
    String _Encoding "UTF-8";
    String long_name "Chief Scientist";
  }
  cruise_number {
    String long_name "Cruise Number";
  }
  id {
    String cf_role "profile_id";
    String long_name "Original filename";
  }
 }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.9.3-development,hdf5=1.12.2";
    String cdm_data_type "Profile";
    String cdm_profile_variables "id";
    String Conventions "CF-1.10, COARDS, ACDD-1.3";
    String coord_system "earth";
    String country_code "Ca";
    String country_institute_code "CaIML";
    String creator_name 
"Maurice-Lamontagne Institute (MLI), Department of Fisheries and
            Oceans Canada (DFO) | Institut Maurice-Lamontagne (IML), Pêches et Océans Canada (MPO)";
    String creator_type "person";
    Float64 Easternmost_Easting -40.82833;
    String featureType "Profile";
    String flag_meanings 
"no_quality_control value_seems_correct
            value_appears_inconsistent_with_other_values value_seems_doubtful value_seems_erroneous
            value_was_modified value_missing";
    Byte flag_values 0, 1, 2, 3, 4, 5, 9;
    String flags_reference "BODC SeaDataNet";
    Float64 geospatial_lat_max 65.14529;
    Float64 geospatial_lat_min 32.15767;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -40.82833;
    Float64 geospatial_lon_min -94.21583;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 4114.59;
    Float64 geospatial_vertical_min -841.35;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2024-05-03T19:49:30Z (local files)
2024-05-03T19:49:30Z https://erddap.ogsl.ca/tabledap/mpoSgdoCtdAgg.das";
    String infoUrl "//www.dfo-mpo.gc.ca/index-fra.html";
    String institution "Fisheries and Oceans Canada";
    String institution_fr "Fisheries and Oceans Canada";
    String instrument_type "CTD";
    String keywords "conductivity, CTD, density, depth, fluorescence, oxygen, pressure, salinity, temperature";
    String keywords_fr "CTD,conductivité,densité,fluorescence,oxygène,pression,profondeur,salinité,température";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"Open Government Licence - Canada - The data may be used and
            redistributed for free but is not intended for legal use, since it may contain
            inaccuracies. Neither the data Contributor, ERD, NOAA, nor the United States Government,
            nor any of their employees or contractors, makes any warranty, express or
            implied, including warranties of merchantability and fitness for a
            particular purpose, or assumes any legal liability for the accuracy,
            completeness, or usefulness, of this information.";
    String naming_authority "BODC, SDC, CF, MEDS";
    Float64 Northernmost_Northing 65.14529;
    String odf_data_type "CTD";
    String organization "IML";
    String platform "research vessel";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String publisher_email "gddaiss-dmsaisb@dfo-mpo.gc.ca";
    String publisher_type "institution";
    String source_files "https://waf-cc.prod.ogsl.ca/mpo/sgdo/CTD/";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 32.15767;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "chief_scientist, station, cruise_number";
    String summary 
"SGDO - Conductivity, Temperature, Depth (CTD). Fisheries and Oceans
            Canada data from a local source.";
    String time_coverage_end "2024-04-03T13:25:42Z";
    String time_coverage_start "1982-03-17T23:25:00Z";
    String title "SGDO-Données CTD | OMDS-CTD data";
    Float64 Westernmost_Easting -94.21583;
  }
}

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.