ERDDAP > tabledap > Data Access Form

Dataset Title:	SLL-3425 Boston Harbor Entrance Buoy
Institution:	Stone Living Lab - a partnership between Boston Harbor Now, UMass Boston's School for the Environment, the City of Boston, the Massachusetts Department of Conservation and Recreation, the Massachusetts Executive Office of Energy and Environmental Affairs, the National Park Service, and the James M. and Cathleen D. Stone Foundation   (Dataset ID: SLL-3425)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Subset | Files | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum    or a List of Values	Maximum
time (UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2026-05-06T00:00:00Z	2026-07-26T08:00:00Z
stationID	!= =~ <= >= = < >		!= =~ <= >= = < >		"3425"	"3425"
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		42.3409462
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		-70.919838
altitude (m)	!= =~ <= >= = < >		!= =~ <= >= = < >		-12.9	2435606.5
course_over_ground (degrees_true)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	359.9
speed_over_ground (km/h)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	246.3
heading (degrees)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	359.9
heading_true (True Heading, degrees_true)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	360.0
barometric_pressure (inHg)	!= =~ <= >= = < >		!= =~ <= >= = < >		29.1	30.3
air_temperature (degree_C)	!= =~ <= >= = < >		!= =~ <= >= = < >		6.8	35.2
relative_humidity (percent)	!= =~ <= >= = < >		!= =~ <= >= = < >
dewpoint (Dewpoint Temperature, degree_C)	!= =~ <= >= = < >		!= =~ <= >= = < >
wind_from_direction (degrees_true)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	360.0
wind_from_direction_magnetic (degrees)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	360.0
wind_speed (m/s)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	73.3
significant_wave_height (m)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	2.07
dominant_wave_period (s)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	11.8
dominant_wave_direction (degrees_true)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	360.0
mean_wave_direction (degrees_true)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	360.0
max_wave_height (Maximum Wave Height, m)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	3.28
wave_height_h10 (m)	!= =~ <= >= = < >		!= =~ <= >= = < >		0.0	2.63

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" time stationID latitude longitude altitude course_over_ground speed_over_ground heading heading_true barometric_pressure air_temperature relative_humidity dewpoint wind_from_direction wind_from_direction_magnetic wind_speed significant_wave_height dominant_wave_period dominant_wave_direction mean_wave_direction max_wave_height wave_height_h10 time stationID latitude longitude altitude course_over_ground speed_over_ground heading heading_true barometric_pressure air_temperature relative_humidity dewpoint wind_from_direction wind_from_direction_magnetic wind_speed significant_wave_height dominant_wave_period dominant_wave_direction mean_wave_direction max_wave_height wave_height_h10 time stationID latitude longitude altitude course_over_ground speed_over_ground heading heading_true barometric_pressure air_temperature relative_humidity dewpoint wind_from_direction wind_from_direction_magnetic wind_speed significant_wave_height dominant_wave_period dominant_wave_direction mean_wave_direction max_wave_height wave_height_h10 time stationID latitude longitude altitude course_over_ground speed_over_ground heading heading_true barometric_pressure air_temperature relative_humidity dewpoint wind_from_direction wind_from_direction_magnetic wind_speed significant_wave_height dominant_wave_period dominant_wave_direction mean_wave_direction max_wave_height wave_height_h10 time stationID latitude longitude altitude course_over_ground speed_over_ground heading heading_true barometric_pressure air_temperature relative_humidity dewpoint wind_from_direction wind_from_direction_magnetic wind_speed significant_wave_height dominant_wave_period dominant_wave_direction mean_wave_direction max_wave_height wave_height_h10 ")

File type: (more information) .asc - View OPeNDAP-style ISO-8859-1 comma-separated text. .croissant - Download the dataset croissant schema. .csv - Download a ISO-8859-1 comma-separated text table (line 1: names; line 2: units; ISO 8601 times). .csv0 - Download a ISO-8859-1 .csv file without column names or units. Times are ISO 8601 strings. .csvp - Download a ISO-8859-1 .csv file with line 1: name (units). Times are ISO 8601 strings. .das - View the dataset's metadata via an ISO-8859-1 OPeNDAP Dataset Attribute Structure (DAS). .dataTable - A JSON file formatted for use with the Google Visualization client library (Google Charts). .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. .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 19115/19139 UTF-8 .xml metadata using the version default for this server. .iso19115_2 - View the dataset's ISO 19115-2/19139 UTF-8 .xml metadata. .iso19115_3_2016 - View the dataset's ISO 19115-3:2016 UTF-8 .xml metadata. .iso19139_2007 - View the dataset's ISO 19139:2007 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). .jsonlCSV - View a UTF-8 JSON Lines CSV file without column names (mv = '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). .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. .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. .ncHeader - View the UTF-8 header (the metadata) for the NetCDF-3 .nc 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. .tsv - Download a ISO-8859-1 tab-separated text table (line 1: names; line 2: units; ISO 8601 times). .tsv0 - Download a ISO-8859-1 .tsv file without column names or units. Times are ISO 8601 strings. .tsvp - Download a ISO-8859-1 .tsv file with line 1: name (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. .largePdf - View a large .pdf image file with a graph or map. .largePng - View a large .png image file with a graph or map. .pdf - View a standard, medium-sized .pdf image file with a graph or map. .png - View a standard, medium-sized .png image file with a graph or map. .smallPdf - View a small .pdf image file with a graph or map. .smallPng - View a small .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";
    Float64 actual_range 1.7780256e+9, 1.7850528e+9;
    String axis "T";
    String ioos_category "Time";
    String long_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";
  }
  stationID {
    String cf_role "timeseries_id";
    String ioos_category "Identifier";
    String long_name "Station ID";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue -100000.0;
    Float64 actual_range 42.3409462, 42.3409462;
    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";
    Float64 _FillValue -100000.0;
    Float64 actual_range -70.919838, -70.919838;
    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";
  }
  altitude {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "up";
    Float64 _FillValue -100000.0;
    Float64 actual_range -12.9, 2435606.5;
    String axis "Z";
    String ioos_category "Location";
    String long_name "Altitude";
    String positive "up";
    String standard_name "altitude";
    String units "m";
  }
  course_over_ground {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 359.9;
    String ioos_category "Other";
    String long_name "Course Over Ground";
    String units "degrees_true";
  }
  speed_over_ground {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 246.3;
    String ioos_category "Other";
    String long_name "Speed Over Ground";
    String units "km/h";
  }
  heading {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 359.9;
    String ioos_category "Other";
    String long_name "Heading";
    String standard_name "platform_orientation";
    String units "degrees";
  }
  heading_true {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 360.0;
    String ioos_category "Other";
    String long_name "True Heading";
    String units "degrees_true";
  }
  barometric_pressure {
    Float64 _FillValue -100000.0;
    Float64 actual_range 29.1, 30.3;
    String ioos_category "Pressure";
    String long_name "Relative Barometric Pressure";
    String standard_name "air_pressure";
    String units "inHg";
  }
  air_temperature {
    Float64 _FillValue -100000.0;
    Float64 actual_range 6.8, 35.2;
    String ioos_category "Temperature";
    String long_name "Air Temperature";
    String standard_name "air_temperature";
    String units "degree_C";
  }
  relative_humidity {
    Float64 _FillValue -100000.0;
    String ioos_category "Meteorology";
    String long_name "Relative Humidity";
    String standard_name "relative_humidity";
    String units "percent";
  }
  dewpoint {
    Float64 _FillValue -100000.0;
    String ioos_category "Meteorology";
    String long_name "Dewpoint Temperature";
    String standard_name "dew_point_temperature";
    String units "degree_C";
  }
  wind_from_direction {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 360.0;
    String ioos_category "Wind";
    String long_name "Wind From Direction";
    String standard_name "wind_from_direction";
    String units "degrees_true";
  }
  wind_from_direction_magnetic {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 360.0;
    String ioos_category "Wind";
    String long_name "Magnetic Wind Direction";
    String units "degrees";
  }
  wind_speed {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 73.3;
    String ioos_category "Wind";
    String long_name "Wind Speed";
    String standard_name "wind_speed";
    String units "m/s";
  }
  significant_wave_height {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 2.07;
    String ioos_category "Surface Waves";
    String long_name "Significant Wave Height";
    String standard_name "sea_surface_wave_significant_height";
    String units "m";
  }
  dominant_wave_period {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 11.8;
    String ioos_category "Surface Waves";
    String long_name "Dominant Wave Period";
    String standard_name "sea_surface_wave_period_at_variance_spectral_density_maximum";
    String units "s";
  }
  dominant_wave_direction {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 360.0;
    String ioos_category "Surface Waves";
    String long_name "Dominant Wave Direction";
    String standard_name "sea_surface_wave_from_direction";
    String units "degrees_true";
  }
  mean_wave_direction {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 360.0;
    String ioos_category "Surface Waves";
    String long_name "Mean Wave Direction";
    String standard_name "sea_surface_wave_mean_from_direction";
    String units "degrees_true";
  }
  max_wave_height {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 3.28;
    String ioos_category "Surface Waves";
    String long_name "Maximum Wave Height";
    String standard_name "sea_surface_wave_maximum_height";
    String units "m";
  }
  wave_height_h10 {
    Float64 _FillValue -100000.0;
    Float64 actual_range 0.0, 2.63;
    String ioos_category "Surface Waves";
    String long_name "Mean Height of Highest Tenth of Waves";
    String standard_name "sea_surface_wave_mean_height_of_highest_tenth";
    String units "m";
  }
 }
  NC_GLOBAL {
    String acknowledgement "This dataset is part of a MetOcean Cyberinfrastructure supported by the Integrated Ocean Observing System (IOOS) to streamline integration of data from the Northeast region.";
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "latitude, longitude, stationID";
    String contributor_address "104 Morrissey Blvd, Boston, MA 02125";
    String contributor_email "info at stonelivinglab.org";
    String contributor_name "Stone Living Lab";
    String contributor_url "https://stonelivinglab.org/";
    String Conventions "CF-1.10, ACDD-1.3, IOOS-1.2, COARDS";
    String creator_address "100 Morrissey Blvd, Boston, MA 02125";
    String creator_country "USA";
    String creator_email "info at stonelivinglab.org";
    String creator_name "Stone Living Lab";
    String creator_sector "Academic";
    String creator_state "Massachusetts";
    String creator_type "organization";
    String creator_url "https://stonelivinglab.org/";
    Float64 Easternmost_Easting -70.919838;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 42.3409462;
    Float64 geospatial_lat_min 42.3409462;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -70.919838;
    Float64 geospatial_lon_min -70.919838;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 2435606.5;
    Float64 geospatial_vertical_min -12.9;
    String geospatial_vertical_positive "up";
    String geospatial_vertical_units "m";
    String gts_ingest "true";
    String history 
"2026-07-26T09:00:48Z Data are served via the WQData Live API
2026-07-26T09:00:48Z http://data.neracoos.org/erddap/tabledap/SLL-3425.html";
    String infoUrl "https://www.wqdatalive.com";
    String institution "Stone Living Lab - a partnership between Boston Harbor Now, UMass Boston's School for the Environment, the City of Boston, the Massachusetts Department of Conservation and Recreation, the Massachusetts Executive Office of Energy and Environmental Affairs, the National Park Service, and the James M. and Cathleen D. Stone Foundation";
    String ioos_regional_association "NERACOOS";
    String ioos_regional_association_url "https://neracoos.org/";
    String keywords "air temperature, barometric pressure, boston harbor, buoy, coastal, dewpoint, humidity, meteorology, neracoos, nexsens, ocean, sll, stone living lab, surface waves, wind";
    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, NERACOOS, 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.";
    Float64 Northernmost_Northing 42.3409462;
    String platform_name "Stone Living Lab";
    String processing_level "raw dataset, no qc provided";
    String project "Stone Living Lab Real-Time Monitoring Network";
    String publisher_country "USA";
    String publisher_email "info at neracoos.org";
    String publisher_institution "NERACOOS";
    String publisher_name "NERACOOS";
    String publisher_phone "(603) 319-1785";
    String publisher_type "institution";
    String publisher_url "https://www.neracoos.org";
    String sourceUrl "Data are served via the WQData Live API";
    Float64 Southernmost_Northing 42.3409462;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "longitude, latitude";
    String summary "Meteorological and oceanographic observations from the Stone Living Lab Nexsens SLL-3425 buoy at the Boston Harbor Entrance (latitude: 42.34, longitude: -70.92). Measurements include atmospheric pressure, air temperature, relative humidity, dewpoint, wind, and wave parameters collected at approximately 20-minute intervals via the WQData Live platform. Ocean observation data are served through the Northeastern Regional Association of Coastal and Ocean Observing Systems (NERACOOS).";
    String time_coverage_end "2026-07-26T08:00:00Z";
    String time_coverage_start "2026-05-06T00:00:00Z";
    String title "SLL-3425 Boston Harbor Entrance Buoy";
    Float64 Westernmost_Easting -70.919838;
  }
}

 

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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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