ERDDAP > tabledap > Data Access Form

Dataset Title:	Sky-Quality Meters (SQM) Antonswerk
Institution:	CNR-IBE   (Dataset ID: skyquality_meters_sqm_antonswerk)
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
id	!= =~ <= >= = < >		!= =~ <= >= = < >		3201
dateUTC (UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >
timeUTC	!= =~ <= >= = < >		!= =~ <= >= = < >		"00:00:05"	"23:55:18"
hourUTC	!= =~ <= >= = < >		!= =~ <= >= = < >		0	23
minuteUTC	!= =~ <= >= = < >		!= =~ <= >= = < >		0	55
Temp (Temperature, degree_C)	!= =~ <= >= = < >		!= =~ <= >= = < >		-16.5	22.2
NSB (mag arcsec-2)	!= =~ <= >= = < >		!= =~ <= >= = < >		10.01	22.89
adjusted_NSB (mag arcsec-2)	!= =~ <= >= = < >		!= =~ <= >= = < >		9.91	22.79
delay	!= =~ <= >= = < >		!= =~ <= >= = < >		-222
Moon_fraction (%)	!= =~ <= >= = < >		!= =~ <= >= = < >		0	0
Moon_presence (1)	!= =~ <= >= = < >		!= =~ <= >= = < >		0	1
Nautical_night (1)	!= =~ <= >= = < >		!= =~ <= >= = < >		0	1
time (Datetime, UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2024-02-21T16:50:05Z	2024-03-11T21:25:05Z
station_id	!= =~ <= >= = < >		!= =~ <= >= = < >		"skyquality_meters_..."	"skyquality_meters_..."
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		78.93441	78.93441
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		11.83255	11.83255

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" id dateUTC timeUTC hourUTC minuteUTC Temp NSB adjusted_NSB delay Moon_fraction Moon_presence Nautical_night time station_id latitude longitude id dateUTC timeUTC hourUTC minuteUTC Temp NSB adjusted_NSB delay Moon_fraction Moon_presence Nautical_night time station_id latitude longitude id dateUTC timeUTC hourUTC minuteUTC Temp NSB adjusted_NSB delay Moon_fraction Moon_presence Nautical_night time station_id latitude longitude id dateUTC timeUTC hourUTC minuteUTC Temp NSB adjusted_NSB delay Moon_fraction Moon_presence Nautical_night time station_id latitude longitude id dateUTC timeUTC hourUTC minuteUTC Temp NSB adjusted_NSB delay Moon_fraction Moon_presence Nautical_night time station_id latitude longitude ")

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). .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).

(Documentation / Bypass this form )
 
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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  id {
    Int32 _FillValue 32767;
    Int32 actual_range 3201, 3201;
    String long_name "Id";
  }
  dateUTC {
    String ioos_category "Time";
    String long_name "Date UTC";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String time_precision "1970-01-01";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  timeUTC {
    String long_name "Time UTC";
  }
  hourUTC {
    Int32 _FillValue 127;
    Int32 actual_range 0, 23;
    String long_name "Hour UTC";
  }
  minuteUTC {
    Int32 _FillValue 127;
    Int32 actual_range 0, 55;
    String long_name "Minute UTC";
  }
  Temp {
    Float32 _FillValue NaN;
    Float32 actual_range -16.5, 22.2;
    String long_name "Temperature";
    String standard_name "air_temperature";
    String units "degree_C";
  }
  NSB {
    Float32 _FillValue NaN;
    Float32 actual_range 10.01, 22.89;
    String long_name "Night sky brightness";
    String standard_name "nsb";
    String units "mag arcsec-2";
  }
  adjusted_NSB {
    Float32 _FillValue NaN;
    Float32 actual_range 9.91, 22.79;
    String long_name "Adjusted Night sky brightness";
    String standard_name "adjusted nsb";
    String units "mag arcsec-2";
  }
  delay {
    Int32 _FillValue 127;
    Int32 actual_range -222, -222;
    String long_name "Delay";
  }
  Moon_fraction {
    Int32 _FillValue 2147483647;
    Int32 actual_range 0, 0;
    String colorBarMaximum "1.0";
    String colorBarMinimum "0.0";
    String long_name "Moon Fraction";
    String standard_name "moon_fraction";
    String units "%";
  }
  Moon_presence {
    Int32 _FillValue 127;
    Int32 actual_range 0, 1;
    String long_name "Moon Presence";
    String standard_name "moon_presence";
    String units "1";
  }
  Nautical_night {
    Int32 _FillValue 127;
    Int32 actual_range 0, 1;
    String long_name "Nautical Night";
    String standard_name "nautical_night";
    String units "1";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.708534205e+9, 1.710192305e+9;
    String axis "T";
    String ioos_category "Time";
    String long_name "Datetime";
    String source_name "datetime";
    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";
  }
  station_id {
    String actual_range 
"skyquality_meters_sqm_antonswerk
skyquality_meters_sqm_antonswerk";
    String cf_role "timeseries_id";
    String long_name "Id of the station in the TimeSeries";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 78.93441, 78.93441;
    String axis "Y";
    String ioos_category "Location";
    String long_name "latitude position of the station";
    String standard_name "latitude";
    String units "degrees_north";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 11.83255, 11.83255;
    String axis "X";
    String ioos_category "Location";
    String long_name "longitude position of the station";
    String standard_name "longitude";
    String units "degrees_east";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "station_id,latitude,longitude";
    String contributor_email "luciano.massetti@ibe.cnr.it";
    String contributor_institution "IBE-CNR";
    String contributor_name "luciano massetti";
    String Conventions "COARDS, CF-1.10, ACDD-1.3";
    String creator_email "luciano.massetti@ibe.cnr.it";
    String creator_name "CNR-IBE";
    String creator_url "https://metadata.iadc.cnr.it/geonetwork/srv/api/records/43d450c8-dc37-4467-a9f0-60ed8aa5a879";
    Float64 Easternmost_Easting 11.83255;
    String featureType "TimeSeries";
    Float64 geospatial_lat_max 78.93441;
    Float64 geospatial_lat_min 78.93441;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 11.83255;
    Float64 geospatial_lon_min 11.83255;
    String geospatial_lon_units "degrees_east";
    String history 
"Sky-Quality Meters (SQM) are low-cost sensors for measuring night sky brightness. Continuous measurements are provided only for the winter period (measurements only at night). While from April to September it is not operational.
2024-12-26T18:30:54Z (local files)
2024-12-26T18:30:54Z https://data.iadc.cnr.it/erddap/tabledap/skyquality_meters_sqm_antonswerk.html";
    String infoUrl "https://metadata.iadc.cnr.it/geonetwork/srv/api/records/43d450c8-dc37-4467-a9f0-60ed8aa5a879";
    String institution "CNR-IBE";
    String keywords "adjusted, adjusted_NSB, antonswerk, bioeconomy, council, data, date, datetime, dateUTC, delay, fraction, hour, hourUTC, institute, italian, magarcsec2, meters, minute, minuteUTC, moon, Moon_fraction, Moon_presence, national, nautical, Nautical_night, night, nsb, presence, quality, research, sky, sky-quality, sqm, Temp, temperature, time, timeUTC";
    String license "CC BY-NC: This license allows reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.";
    Float64 Northernmost_Northing 78.93441;
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 78.93441;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "id, delay";
    String summary "The AUXMON (AUXiliary MONitoring) project aims at providing a continuous monitoring of auxiliary variables useful to support investigation of night-sky brightness. Sky-Quality Meters (SQM) sensors are one of the core infrastructure of the project. They are low-cost sensors for measuring night sky brightness";
    String time_coverage_end "2024-03-11T21:25:05Z";
    String time_coverage_start "2024-02-21T16:50:05Z";
    String title "Sky-Quality Meters (SQM) Antonswerk";
    Float64 Westernmost_Easting 11.83255;
  }
}

 

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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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