Data Access Form

Dataset Title:	Surfrider, station 796
Institution:	Surfrider (Dataset ID: surfrider_station_796)
Information:	Summary \| License \| FGDC \| ISO 19115 \| Metadata \| Background \| Make a graph

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Variable	Minimum	Maximum
time (time of observation, UTC)	2018-06-18T13:30:00Z	2024-11-18T14:00:00Z

station_id (Platform Name)	"station_796"	"station_796"
latitude (station latitude, degrees_north)	41.003015	41.003015

longitude (station longitude, degrees_east)	-72.296199	-72.296199

depth (m)	0.0	0.0

enterococcus (MPN/100mL)	10.0	19863.0

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.5293286e+9, 1.7319384e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "time of observation";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  station_id {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Platform Name";
    String standard_name "platform_name";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 actual_range 41.003015, 41.003015;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "station latitude";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 actual_range -72.296199, -72.296199;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String ioos_category "Location";
    String long_name "station longitude";
    String standard_name "longitude";
    String units "degrees_east";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 actual_range 0.0, 0.0;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "depth of the sensor relative to sea surface";
    String positive "down";
    String standard_name "depth";
    String units "m";
  }
  enterococcus {
    Float64 _FillValue -9999.0;
    Float64 actual_range 10.0, 19863.0;
    String coordinates "time lat lon depth";
    String coverage_content_type "physicalMeasurement";
    String ioos_category "Unknown";
    String long_name "enterococcus";
    Float64 missing_value -9999.0;
    String platform "station_name";
    String units "MPN/100mL";
  }
 }
  NC_GLOBAL {
    String acknowledgement "The BWTF is a network of 35 plus water testing programs run by Surfrider Foundation chapter volunteers and their local partner organizations.  Thanks to all our partners!";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_id, latitude, longitude";
    String comment "This is volunteer-generated data.";
    String Conventions "CF-1.6, ACDD-1.3, COARDS";
    String creator_country "USA";
    String creator_email "chenn@surfrider.org";
    String creator_institution "Surfrider Foundation";
    String creator_name "BWTF";
    String creator_sector "nonprofit";
    String creator_type "institution";
    String creator_url "http://www.surfrider.org/blue-water-task-force/";
    String date_created "2024-11-15T15:05:07Z";
    String date_issued "2024-11-15T15:05:07Z";
    String date_metadata_modified "2024-11-15T15:05:07Z";
    String date_modified "2024-11-15T15:05:07Z";
    Float64 Easternmost_Easting -72.296199;
    String featureType "TimeSeries";
    String geospatial_bounds "POINT(41.003015 -72.296199)";
    String geospatial_bounds_crs "EPSG:4326";
    String geospatial_bounds_vertical_crs "EPSG:4297";
    Float64 geospatial_lat_max 41.003015;
    Float64 geospatial_lat_min 41.003015;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -72.296199;
    Float64 geospatial_lon_min -72.296199;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 0.0;
    Float64 geospatial_vertical_min 0.0;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"Created by the RPS harvester from data at http://www.surfrider.org/blue-water-task-force on 20190114 06:00
2024-11-21T09:32:12Z (local files)
2024-11-21T09:32:12Z http://erddap.maracoos.org/erddap/tabledap/surfrider_station_796.html";
    String id "station_796";
    String infoUrl "https://www.surfrider.org/";
    String institution "Surfrider";
    String keywords "agency, bacteria indicators, beaches, coastal waters, comment, contaminants, data, depth, description, Earth Science > Oceans > Water Quality > Ocean Contaminants, enterobacteria, enterococcus, environmental, epa, foundation, human health risk, identifier, latitude, longitude, name, observation, ocean, oceans, platform, platform_name, protection, quality, recreational waters, relative, sample, sample_time_description, sea, seawater, sensor, station_name, stations, surface, surfrider, time, water";
    String keywords_vocabulary "GCMD Science Keywords";
    String license 
"The Surfrider Foundation grants any members of the public a license to use or distribute this data, so long as any user credits the data to \"The Surfrider Foundation\" where the data is published or distributed, in any form or media. 
This data and any related materials are provided \"as is\", and the Surfrider Foundation, and its employees, contractors, and officers, make no representation or warranty, express or implied, including without limitation warranty of merchantability or fitness for a particular purpose, or warranties as to the quality, accuracy, or completeness of data or information.  The entire risk of use of the data shall be with the user.  The Surfrider Foundation,  and its employees, contractors, and officers,  shall not be liable for any claim for any loss, harm, illness or other damage or injury arising from access to or use of this data or information, including without limitation, any direct, indirect, incidental, exemplary, special or consequential damages.";
    String naming_authority "org.surfrider";
    String nodc_template_version "NODC_NetCDF_TimeSeries_Orthogonal_Template_v2.0";
    Float64 Northernmost_Northing 41.003015;
    String platform "sampling_location";
    String platform_name "station_796";
    String platform_vocabulary "https://mmisw.org/ont/ioos/platform";
    String processing_level "This is volunteer-generated data. Sampling and lab protocols are posted at http://www.surfrider.org/blue-water-task-force";
    String project "Surfrider Foundation’s Blue Water Task Force (BWTF)";
    String publisher_address "PO BOX 4610";
    String publisher_city "Newark";
    String publisher_country "USA";
    String publisher_email "devops@rpsgroup.com";
    String publisher_institution "MARACOOS";
    String publisher_name "MARACOOS";
    String publisher_phone "(401) 789-6224";
    String publisher_postalcode "19715";
    String publisher_state "DE";
    String publisher_type "institution";
    String publisher_url "http://www.maracoos.org";
    String references "http://public.surfrider.org/BWTF_manual_June2003.pdf";
    String source "http://www.surfrider.org/blue-water-task-force";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 41.003015;
    String standard_name_vocabulary "CF Standard Name Table v55";
    String summary "Fecal indicator bacteria levels are measured in water samples collected from ocean and bay beaches, streams, lakes and other coastal waterways. Water samples are processed using the IDEXX Quanti-Tray/2000 Method to enumerate enterococcus bacteria, a bacteria indicator used by the Environmental Protection Agency (EPA) to determine human health risk at beaches and in other recreational waters. Surfrider lab and sampling site locations can be viewed at http://www.surfrider.org/blue-water-task-force";
    String time_coverage_duration "PT0S";
    String time_coverage_end "2024-11-18T14:00:00Z";
    String time_coverage_resolution "P0S";
    String time_coverage_start "2018-06-18T13:30:00Z";
    String title "Surfrider, station 796";
    Float64 Westernmost_Easting -72.296199;
  }
}

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.