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Dataset Title:  HW Port Huron Subscribe RSS
Institution:  Wayne State University   (Dataset ID: obs_106)
Information:  Summary ? | License ? | FGDC | ISO 19115 | Metadata | Background (external link) | Files | Make a graph
 
Variable ?   Optional
Constraint #1 ?
Optional
Constraint #2 ?
   Minimum ?
 
   Maximum ?
 
 time (UTC) ?          2022-11-02T00:00:00Z    2023-09-27T17:42:00Z
  < slider >
 longitude (degrees_east) ?          -82.42479705810547    -82.42479705810547
  < slider >
 latitude (degrees_north) ?          42.987098693847656    42.987098693847656
  < slider >
 sea_water_electrical_conductivity (S/m) ?          0.0    0.028699999675154686
 sea_water_electrical_conductivity_aggregate_test ?          2    2
 sea_water_electrical_conductivity_flat_line_test ?          2    2
 sea_water_electrical_conductivity_gross_range_test ?          2    2
 sea_water_electrical_conductivity_rate_of_change_test ?          2    2
 sea_water_electrical_conductivity_spike_test ?          2    2
 sea_water_ph_reported_on_total_scale ?          7.159999847412109    10.579999923706055
 sea_water_ph_reported_on_total_scale_aggregate_test ?          2    2
 sea_water_ph_reported_on_total_scale_flat_line_test ?          2    2
 sea_water_ph_reported_on_total_scale_gross_range_test ?          2    2
 sea_water_ph_reported_on_total_scale_rate_of_change_test ?          2    2
 sea_water_ph_reported_on_total_scale_spike_test ?          2    2
 platform ?              
 
Server-side Functions ?
 distinct() ?
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.6673472e+9, 1.69583652e+9;
    String axis "T";
    String calendar "gregorian";
    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";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue -9999.0;
    Float64 actual_range -82.42479705810547, -82.42479705810547;
    String axis "X";
    String comment "Longitude given by data provider for this platform dataset";
    String ioos_category "Location";
    String long_name "Longitude";
    Float64 missing_value -9999.0;
    String standard_name "longitude";
    String units "degrees_east";
    Float64 valid_max 180.0;
    Float64 valid_min -180.0;
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue -9999.0;
    Float64 actual_range 42.987098693847656, 42.987098693847656;
    String axis "Y";
    String comment "Latitude given by data provider for this platform dataset";
    String ioos_category "Location";
    String long_name "Latitude";
    Float64 missing_value -9999.0;
    String standard_name "latitude";
    String units "degrees_north";
    Float64 valid_max 90.0;
    Float64 valid_min -90.0;
  }
  sea_water_electrical_conductivity {
    Float64 _FillValue -9999.9;
    Float64 actual_range 0.0, 0.028699999675154686;
    String ancillary_variables "sea_water_electrical_conductivity_flat_line_test sea_water_electrical_conductivity_gross_range_test sea_water_electrical_conductivity_rate_of_change_test sea_water_electrical_conductivity_spike_test sea_water_electrical_conductivity_aggregate_test";
    String axis "T";
    String comment "Conductivity is the ability of a material to pass an electrical current. It is the inverse of resistance. In water, it is a proxy from which salinity is derived for water quality or to further derive water density. (IOOS)";
    String coordinates "time lat lon z";
    String coverage_content_type "physicalMeasurement";
    String instrument "instrument0";
    String ioos_category "Salinity";
    String long_name "Conductivity";
    Float64 missing_value -9999.900390625;
    String platform "platform";
    String standard_name "sea_water_electrical_conductivity";
    String units "S/m";
    Float64 valid_max 0.1;
    Float64 valid_min 0.0;
  }
  sea_water_electrical_conductivity_aggregate_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "aggregate_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_electrical_conductivity_aggregate_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_electrical_conductivity_flat_line_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "flat_line_test_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_electrical_conductivity_flat_line_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_electrical_conductivity_gross_range_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "gross_range_test_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_electrical_conductivity_gross_range_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_electrical_conductivity_rate_of_change_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "rate_of_change_test_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_electrical_conductivity_rate_of_change_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_electrical_conductivity_spike_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "spike_test_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_electrical_conductivity_spike_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_ph_reported_on_total_scale {
    Float64 _FillValue -9999.9;
    Float64 actual_range 7.159999847412109, 10.579999923706055;
    String ancillary_variables "sea_water_ph_reported_on_total_scale_flat_line_test sea_water_ph_reported_on_total_scale_gross_range_test sea_water_ph_reported_on_total_scale_rate_of_change_test sea_water_ph_reported_on_total_scale_spike_test sea_water_ph_reported_on_total_scale_aggregate_test";
    String axis "T";
    String comment "pH is a measure of the acidity or alkalinity of the seawater. (NOAA)";
    String coordinates "time lat lon z";
    String coverage_content_type "physicalMeasurement";
    String instrument "instrument0";
    String ioos_category "Unknown";
    String long_name "pH";
    Float64 missing_value -9999.900390625;
    String platform "platform";
    String standard_name "sea_water_ph_reported_on_total_scale";
    Float64 valid_max 14.0;
    Float64 valid_min 0.0;
  }
  sea_water_ph_reported_on_total_scale_aggregate_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "aggregate_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_ph_reported_on_total_scale_aggregate_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_ph_reported_on_total_scale_flat_line_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "flat_line_test_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_ph_reported_on_total_scale_flat_line_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_ph_reported_on_total_scale_gross_range_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "gross_range_test_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_ph_reported_on_total_scale_gross_range_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_ph_reported_on_total_scale_rate_of_change_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "rate_of_change_test_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_ph_reported_on_total_scale_rate_of_change_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  sea_water_ph_reported_on_total_scale_spike_test {
    Byte _FillValue 9;
    String _Unsigned "false";
    Byte actual_range 2, 2;
    String axis "T";
    String coordinates "time lat lon z";
    String flag_meanings "GOOD NOT_EVALUATED SUSPECT BAD MISSING";
    Byte flag_values 1, 2, 3, 4, 9;
    String instrument "instrument0";
    String ioos_category "Quality";
    String long_name "spike_test_quality_flag";
    Byte missing_value 9;
    String platform "WIM_355";
    String standard_name "sea_water_ph_reported_on_total_scale_spike_test";
    Byte valid_max 9;
    Byte valid_min 1;
  }
  platform {
    String _Unsigned "false";
    String cf_role "timeseries_id";
    String ioos_category "Other";
  }
 }
  NC_GLOBAL {
    String acknowledgement "Thanks to Mathew Biddle, Tim Boyer, and the NCEI NetCDF working group for guidance";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "platform,longitude,latitude";
    String comment "These data were automatically archived by GLOS' Seagull Platform. Contact GLOS with questions or concerns.";
    String contributor_name "Wayne State University";
    String contributor_role "Ocean Observing System Contributor";
    String Conventions "CF-1.10, ACDD-1.3";
    String creator_country "USA";
    String creator_institution "Wayne State University";
    String creator_sector "academic";
    String creator_type "institution";
    String creator_url "https://wayne.edu/";
    String date_created "2026-09-10T18:44:56.237149Z";
    String date_issued "2026-09-10T18:44:56.237190Z";
    String date_metadata_modified "2026-09-10T18:44:56.237187Z";
    String date_modified "2026-09-10T18:44:56.237182Z";
    Float64 Easternmost_Easting -82.42479705810547;
    String featureType "TimeSeries";
    String geospatial_bounds "POINT (-82.424797 42.987099)";
    String geospatial_bounds_crs "EPSG:4326";
    String geospatial_bounds_vertical_crs "EPSG:5829";
    Float64 geospatial_lat_max 42.987098693847656;
    Float64 geospatial_lat_min 42.987098693847656;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -82.42479705810547;
    Float64 geospatial_lon_min -82.42479705810547;
    String geospatial_lon_units "degrees_east";
    String geospatial_vertical_max "406";
    String geospatial_vertical_min "0";
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String gts_ingest "False";
    String history 
"These data were automatically archived by GLOS' Seagull Platform. Corrections to data may periodically occur. Contact GLOS with questions or concerns.
2026-09-11T17:20:56Z (local files)
2026-09-11T17:20:56Z https://seagull-erddap.glos.org/erddap/tabledap/obs_106.html";
    String id "WIM_355";
    String infoUrl "https://waterdatadetroit.azurewebsites.net/";
    String institution "Wayne State University";
    String instrument "various";
    String instrument_vocabulary "None specified";
    String keywords "Earth Science > Oceans > Ocean Chemistry > pH, Earth Science > Oceans > Salinity/Density > Conductivity";
    String keywords_vocabulary "GCMD Earth Science Keywords. Version 15.6";
    String license "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, GLOS, 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 metadata_link "https://www.ncei.noaa.gov/data/oceans/ncei/formats/netcdf/v2.0/";
    String naming_authority "gov.noaa.ncei";
    String ncei_template_version "NCEI_NetCDF_TimeSeries_Orthogonal_Template_v2.0";
    Float64 Northernmost_Northing 42.987098693847656;
    String platform "WIM_355";
    String platform_name "HW Port Huron";
    String platform_type "moored_buoy";
    String platform_vocabulary "None specified";
    String processing_level "Not Applicable";
    String product_version "v1";
    String program "NCEI-IOOS-GLOS Data Pipeline";
    String project "NCEI-IOOS-GLOS Data Pipeline";
    String publisher_country "USA";
    String publisher_email "info@glos.org";
    String publisher_institution "GLOS";
    String publisher_name "GLOS Cyberinfrastructure Engineer";
    String publisher_type "position";
    String publisher_url "https://glos.org";
    String references "https://www.ncei.noaa.gov/data/oceans/ncei/formats/netcdf/v2.0/";
    String sea_name "Great Lakes";
    String source "GLOS Seagull";
    String source_monthly_file "WIM_355_2023_09.nc";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 42.987098693847656;
    String standard_name_vocabulary "CF Standard Name Table v77";
    String summary "This site is located on the estuary of St Clair River to Lake huron. This site is one of the 14 source water intake points belonging to the Huron to Erie Drinking Water Monitoring Network established in 2007 along the U.S side of the Huron to Erie corridor. With real-time monitoring equipment including EXO2 and TD4100, etc., the network can automatically detect anomalies in source water and send notifications to all water treatment plants along the corridor for early warning.";
    String time_coverage_duration "PT1M";
    String time_coverage_end "2023-09-27T17:42:00Z";
    String time_coverage_resolution "PT15M";
    String time_coverage_start "2022-11-02T00:00:00Z";
    String title "HW Port Huron";
    String uuid "TBD";
    Float64 Westernmost_Easting -82.42479705810547;
    String wmo_platform_code "NA";
  }
}

 

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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