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Dataset Title:	Provisional Real-Time Hakai Seafloor Observatory in Hyacinthe Bay, Quadra Island, British Columbia, Canada
Institution:	Hakai Institute   (Dataset ID: HakaiQuadraLimpet5min)
Information:	Summary | License | FGDC | Metadata | Background | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum	Maximum
time (UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		50.11736	50.11736
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-125.22003	-125.22003
station	!= =~ <= >= = < >		!= =~ <= >= = < >		Quadra Limpet	Quadra Limpet
WaterTemp_Avg (degree_Celsius)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterTemp_Std (degree_Celsius)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterTemp_UQL	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterTemp_flags	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterEC_Avg (S/m)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterEC_Std (S/m)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterEC_UQL	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterEC_flags	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterPressure_Avg (decibar)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterPressure_Std (Sea Water Pressure STD, decibar)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterPressure_UQL	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterPressure_flags	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterDepth_Avg (Depth Mean, m)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterDepth_UQL (Depth QARTOD Quality Flags)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterDepth_flags (Depth Quality Flags)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterOxygen_Avg (ml/L)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterOxygen_Std (ml/L)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterOxygen_UQL	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterOxygen_flags (Water Oxygen Quality Flags)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterSalinity_Avg (Salinity Mean)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterSalinity_UQL (Salinity QARTOD Quality Flags)	!= =~ <= >= = < >		!= =~ <= >= = < >
WaterSalinity_flags (Water Salinity Quality Flags)	!= =~ <= >= = < >		!= =~ <= >= = < >
Chlorophyll_Avg (Chlorophyll Mean, μg/l)	!= =~ <= >= = < >		!= =~ <= >= = < >
Chlorophyll_UQL	!= =~ <= >= = < >		!= =~ <= >= = < >
Chlorophyll_flags (Chlorophyll Quality Flags)	!= =~ <= >= = < >		!= =~ <= >= = < >

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" time latitude longitude station WaterTemp_Avg WaterTemp_Std WaterTemp_UQL WaterTemp_flags WaterEC_Avg WaterEC_Std WaterEC_UQL WaterEC_flags WaterPressure_Avg WaterPressure_Std WaterPressure_UQL WaterPressure_flags WaterDepth_Avg WaterDepth_UQL WaterDepth_flags WaterOxygen_Avg WaterOxygen_Std WaterOxygen_UQL WaterOxygen_flags WaterSalinity_Avg WaterSalinity_UQL WaterSalinity_flags Chlorophyll_Avg Chlorophyll_UQL Chlorophyll_flags time latitude longitude station WaterTemp_Avg WaterTemp_Std WaterTemp_UQL WaterTemp_flags WaterEC_Avg WaterEC_Std WaterEC_UQL WaterEC_flags WaterPressure_Avg WaterPressure_Std WaterPressure_UQL WaterPressure_flags WaterDepth_Avg WaterDepth_UQL WaterDepth_flags WaterOxygen_Avg WaterOxygen_Std WaterOxygen_UQL WaterOxygen_flags WaterSalinity_Avg WaterSalinity_UQL WaterSalinity_flags Chlorophyll_Avg Chlorophyll_UQL Chlorophyll_flags time latitude longitude station WaterTemp_Avg WaterTemp_Std WaterTemp_UQL WaterTemp_flags WaterEC_Avg WaterEC_Std WaterEC_UQL WaterEC_flags WaterPressure_Avg WaterPressure_Std WaterPressure_UQL WaterPressure_flags WaterDepth_Avg WaterDepth_UQL WaterDepth_flags WaterOxygen_Avg WaterOxygen_Std WaterOxygen_UQL WaterOxygen_flags WaterSalinity_Avg WaterSalinity_UQL WaterSalinity_flags Chlorophyll_Avg Chlorophyll_UQL Chlorophyll_flags time latitude longitude station WaterTemp_Avg WaterTemp_Std WaterTemp_UQL WaterTemp_flags WaterEC_Avg WaterEC_Std WaterEC_UQL WaterEC_flags WaterPressure_Avg WaterPressure_Std WaterPressure_UQL WaterPressure_flags WaterDepth_Avg WaterDepth_UQL WaterDepth_flags WaterOxygen_Avg WaterOxygen_Std WaterOxygen_UQL WaterOxygen_flags WaterSalinity_Avg WaterSalinity_UQL WaterSalinity_flags Chlorophyll_Avg Chlorophyll_UQL Chlorophyll_flags time latitude longitude station WaterTemp_Avg WaterTemp_Std WaterTemp_UQL WaterTemp_flags WaterEC_Avg WaterEC_Std WaterEC_UQL WaterEC_flags WaterPressure_Avg WaterPressure_Std WaterPressure_UQL WaterPressure_flags WaterDepth_Avg WaterDepth_UQL WaterDepth_flags WaterOxygen_Avg WaterOxygen_Std WaterOxygen_UQL WaterOxygen_flags WaterSalinity_Avg WaterSalinity_UQL WaterSalinity_flags Chlorophyll_Avg Chlorophyll_UQL Chlorophyll_flags ")

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .dataTable - A JSON file formatted for use with the Google Visualization client library (Google Charts). .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dds - View the dataset's structure via an ISO-8859-1 OPeNDAP Dataset Descriptor Structure (DDS). .dods - OPeNDAP clients use this to download the data in the DODS binary format. .esriCsv - Download a ISO_8859_1 .csv file for ESRI's ArcGIS 9.x and below (separate date and time columns). .fgdc - View the dataset's UTF-8 FGDC .xml metadata. .geoJson - Download longitude,latitude,otherColumns data as a UTF-8 GeoJSON .json file. .graph - View a Make A Graph web page. .help - View a web page with a description of tabledap. .html - View an OPeNDAP-style HTML Data Access Form. .htmlTable - View a UTF-8 .html web page with the data in a table. Times are ISO 8601 strings. .iso19115 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .itx - Download an ISO-8859-1 Igor Text File. Each response column becomes a wave. .json - View a table-like UTF-8 JSON file (missing value = 'null'; times are ISO 8601 strings). .jsonlCSV1 - View a UTF-8 JSON Lines CSV file with column names on line 1 (mv = 'null'; times are ISO 8601 strings). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = 'null'; times are ISO 8601 strings). .jsonlKVP - View a UTF-8 JSON Lines file with Key:Value pairs (missing value = 'null'; times are ISO 8601 strings). .mat - Download a MATLAB binary file. .nc - Download a flat, table-like, NetCDF-3 binary file with COARDS/CF/ACDD metadata. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc file. .ncCF - Download a NetCDF-3 CF Discrete Sampling Geometries file (Contiguous Ragged Array). .ncCFHeader - View the UTF-8 header (the metadata) for the .ncCF file. .ncCFMA - Download a NetCDF-3 CF Discrete Sampling Geometries file (Multidimensional Array). .ncCFMAHeader - View the UTF-8 header (the metadata) for the .ncCFMA file. .nccsv - Download a NetCDF-3-like 7-bit ASCII NCCSV .csv file with COARDS/CF/ACDD metadata. .nccsvMetadata - View the dataset's metadata as the top half of a 7-bit ASCII NCCSV .csv file. .ncoJson - Download a UTF-8 NCO lvl=2 JSON file with COARDS/CF/ACDD metadata. .odvTxt - Download longitude,latitude,time,otherColumns as an ISO-8859-1 ODV Generic Spreadsheet File (.txt). .parquet - Download as a parquet file. Metadata contains column names ("column_names") and units ("column_units"). .parquetWMeta - Download as a parquet file with detailed metadata. .subset - View an HTML form which uses faceted search to simplify picking subsets of the data. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (units). Times are ISO 8601 strings. .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .wav - Download a .wav audio file. All columns must be numeric and of the same type. .xhtml - View a UTF-8 XHTML (XML) file with the data in a table. Times are ISO 8601 strings. .kml - View a .kml file, suitable for Google Earth. .smallPdf - View a small .pdf image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .largePdf - View a large .pdf image file with a graph or map. .smallPng - View a small .png image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .largePng - View a large .png image file with a graph or map. .transparentPng - View a .png image file (just the data, without axes, landmask, or legend).

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    String axis "T";
    String cell_methods "time: point (interval: 5.0 minutes comment: time correspond to the end of the interval)";
    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 actual_range 50.11736, 50.11736;
    String axis "Y";
    String description "Fixed latitude of the site";
    String ioos_category "Location";
    String long_name "Latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -125.22003, -125.22003;
    String axis "X";
    String description "Fixed longitude of the site";
    String ioos_category "Location";
    String long_name "Longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  station {
    String actual_range 
"Quadra Limpet
Quadra Limpet";
    String cf_role "timeseries_id";
    String ioos_category "Location";
  }
  WaterTemp_Avg {
    String ancillary_variables "WaterTemp_flags WaterTemp_UQL";
    String cell_methods "time: mean (interval: 5.0 minutes)";
    String long_name "Sea Water Temperature Mean";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "sea_water_temperature";
    String units "degree_Celsius";
  }
  WaterTemp_Std {
    String ancillary_variables "WaterTemp_flags WaterTemp_UQL";
    String cell_methods "time: standard_deviation (interval: 5.0 minutes)";
    String long_name "Sea Water Temperature STD";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "sea_water_temperature";
    String units "degree_Celsius";
  }
  WaterTemp_UQL {
    String _Unsigned "false";
    String flag_meaning "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String long_name "Water Temperature QARTOD Quality flags";
    Byte missing_value 2;
    String standard_name "aggregate_quality_flag";
  }
  WaterTemp_flags {
    String long_name "Sea Water Temperature Quality Flags";
  }
  WaterEC_Avg {
    String ancillary_variables "WaterEC_flags WaterEC_UQL";
    String cell_methods "time: mean (interval: 5.0 minutes)";
    String long_name "Sea Water Electrical Conductivity Mean";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "sea_water_electrical_conductivity";
    String units "S/m";
  }
  WaterEC_Std {
    String ancillary_variables "WaterEC_flags WaterEC_UQL";
    String cell_methods "time: standard_deviation (interval: 5.0 minutes)";
    String long_name "Sea Water Electrical Conductivity STD";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "sea_water_electrical_conductivity";
    String units "S/m";
  }
  WaterEC_UQL {
    String _Unsigned "false";
    String flag_meaning "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String long_name "Sea Water Electrical Conductivity QARTOD Quality Flags";
    Byte missing_value 2;
    String standard_name "aggregate_quality_flag";
  }
  WaterEC_flags {
    String long_name "Sea Water Electrical Conductivity Quality Flags";
  }
  WaterPressure_Avg {
    String ancillary_variables "WaterPressure_flags WaterPressure_UQL";
    String cell_methods "time: mean (interval: 5.0 minutes)";
    String long_name "Sea Water Pressure Mean";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "sea_water_pressure";
    String units "decibar";
  }
  WaterPressure_Std {
    String ancillary_variables "WaterPressure_flags WaterPressure_UQL";
    String cell_methods "time: standard_deviation (interval: 5.0 minutes)";
    String long_name "Sea Water Pressure STD";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "sea_water_pressure";
    String units "decibar";
  }
  WaterPressure_UQL {
    String _Unsigned "false";
    String flag_meaning "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String long_name "Sea Water Pressure QARTOD Quality Flags";
    Byte missing_value 2;
    String standard_name "aggregate_quality_flag";
  }
  WaterPressure_flags {
    String long_name "Sea Water Pressure Quality Flags";
  }
  WaterDepth_Avg {
    String ancillary_variables "WaterDepth_flags WaterDepth_UQL";
    String cell_methods "time: mean (interval: 5.0 minutes)";
    String long_name "Depth Mean";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "depth";
    String units "m";
  }
  WaterDepth_UQL {
    String _Unsigned "false";
    String flag_meaning "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String long_name "Depth QARTOD Quality Flags";
    Byte missing_value 2;
    String standard_name "aggregate_quality_flag";
  }
  WaterDepth_flags {
    String long_name "Depth Quality Flags";
  }
  WaterOxygen_Avg {
    String ancillary_variables "WaterOxygen_flags WaterOxygen_UQL";
    String cell_methods "time: mean (interval: 5.0 minutes)";
    String long_name "Dissolved Oxygen Concentration Mean";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "volume_fraction_of_oxygen_in_sea_water";
    String units "ml/L";
  }
  WaterOxygen_Std {
    String ancillary_variables "WaterOxygen_flags";
    String cell_methods "time: standard_deviation (interval: 5.0 minutes)";
    String long_name "Dissolved Oxygen Concentration STD";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "volume_fraction_of_oxygen_in_sea_water";
    String units "ml/L";
  }
  WaterOxygen_UQL {
    String _Unsigned "false";
    String flag_meaning "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String long_name "Water Oxygen QARTOD Quality Flags";
    Byte missing_value 2;
    String standard_name "aggregate_quality_flag";
  }
  WaterOxygen_flags {
    String long_name "Water Oxygen Quality Flags";
  }
  WaterSalinity_Avg {
    String ancillary_variables "WaterSalinity_flags WaterSalinity_UQL";
    String cell_methods "time: mean (interval: 5.0 minutes)";
    String long_name "Salinity Mean";
    String sensor_description "SBE 37-SMP-ODO MicroCAT C-T-ODO (P) Recorder";
    String sensor_type "SBE 37-SMP-ODO";
    String standard_name "sea_water_practical_salinity";
  }
  WaterSalinity_UQL {
    String _Unsigned "false";
    String flag_meaning "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String long_name "Salinity QARTOD Quality Flags";
    Byte missing_value 2;
    String standard_name "aggregate_quality_flag";
  }
  WaterSalinity_flags {
    String long_name "Water Salinity Quality Flags";
  }
  Chlorophyll_Avg {
    String ancillary_variables "Chlorophyll_flags Chlorophyll_UQL";
    String cell_methods "time: mean (interval: 5.0 minutes)";
    String long_name "Chlorophyll Mean";
    String sensor_description "Wet Labs Fluorometer (WetStar)";
    String sensor_type "Fluorometer";
    String units "μg/l";
  }
  Chlorophyll_UQL {
    String _Unsigned "false";
    String flag_meaning "PASS NOT_EVALUATED SUSPECT FAIL MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String long_name "Chlorophyll QARTOD Quality Flags";
    Byte missing_value 2;
    String standard_name "aggregate_quality_flag";
  }
  Chlorophyll_flags {
    String long_name "Chlorophyll Quality Flags";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station";
    String comment 
"##Limitations:
This is a provisional dataset. Please refer to the research dataset for science purposes.";
    String contributor_name "Hakai Institute;Tula Foundation";
    String contributor_role "custodian,owner,distributor,publisher;funder";
    String creator_address "1713 Hyacinthe Road";
    String creator_city "Campbell River";
    String creator_country "Canada";
    String creator_email "data@hakai.org";
    String creator_institution "Hakai Institute";
    String creator_name "Hakai Institute";
    String creator_ror "https://ror.org/02pry0c91";
    String creator_type "institution";
    String creator_url "https://www.hakai.org/";
    String date_created "2022-02-01";
    String date_modified "2024-07-23T13:38:30.630Z";
    Float64 Easternmost_Easting -125.22003;
    String elevation "-20";
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 50.11736;
    Float64 geospatial_lat_min 50.11736;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -125.22003;
    Float64 geospatial_lon_min -125.22003;
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_max "20";
    String geospatial_vertical_min "20";
    String history 
"2025-11-25T22:13:03Z (source database)
2025-11-25T22:13:03Z https://catalogue.hakai.org/erddap/tabledap/HakaiQuadraLimpet5min.html";
    String id "41b0137d-6ac0-407d-a550-dd375475b2b0";
    String infoUrl "https://catalogue.hakai.org/dataset/ca-cioos_41b0137d-6ac0-407d-a550-dd375475b2b0";
    String institution "Hakai Institute";
    String keywords "chlorophyll a, CIOOS:dissolvedOrganicCarbon, CIOOS:oxygen, CIOOS:seaSurfaceHeight, CIOOS:subSurfaceSalinity, CIOOS:subSurfaceTemperature, Limpet, pH, Pratical Salinity, pressure, real-time, sea water temperature, temperature, water temperature";
    String keywords_fra "oxygène, salinité sous la surface, température sous la surface";
    String keywords_vocabulary "CIOOS: CIOOS Essential Ocean Variables Vocabulary";
    String language "eng";
    String license "https://creativecommons.org/licenses/by/4.0";
    String measurement_interval "5 minute";
    String metadata_form "https://hakaiinstitute.github.io/hakai-metadata-entry-form#/en/hakai/tV5qE0aUgaOjSVmgPgiZ6MyHuSy1/-MW5xCIKrrtNHbrGqNTx";
    String metadata_link "https://catalogue.hakai.org/dataset/ca-cioos_41b0137d-6ac0-407d-a550-dd375475b2b0";
    String naming_authority "ca.cioos";
    Float64 Northernmost_Northing 50.11736;
    String platform "fixed benthic node";
    String platform_vocabulary "https://vocab.nerc.ac.uk/collection/L06/current/";
    String progress "onGoing";
    String project "Oceanography";
    String publisher_address "1713 Hyacinthe Road";
    String publisher_city "Campbell River";
    String publisher_country "Canada";
    String publisher_email "data@hakai.org";
    String publisher_institution "Hakai Institute";
    String publisher_name "Hakai Institute";
    String publisher_ror "https://ror.org/02pry0c91";
    String publisher_type "institution";
    String publisher_url "https://www.hakai.org/";
    String site_id "Quadra Limpet";
    String sourceUrl "(source database)";
    Float64 Southernmost_Northing 50.11736;
    String standard_name_vocabulary "CF Standard Name Table v79";
    String summary "The limpet provides real-time data on ocean temperature, conductivity, and dissolved oxygen for the waters off Quadra Island.";
    String summary_fra "La limpet fournit des données en temps réel sur la température de l'océan, la conductivité et l'oxygène dissous pour les eaux au large de l'île Quadra.";
    String title "Provisional Real-Time Hakai Seafloor Observatory in Hyacinthe Bay, Quadra Island, British Columbia, Canada";
    String title_fra "Données en temp réelle et provisoire de l'ibservatoire du fond marin de l'Institut Hakai dans la baie Hyacinthe, île Quadra, Colombie-Britannique, Canada";
    Float64 Westernmost_Easting -125.22003;
  }
}

 

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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 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.

• (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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