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Dataset Title:	INSEA Dione Oxygen data
Institution:	Istituto Nazionale Geofisica e Vulcanologia - Sez. Roma2   (Dataset ID: EMSO_Western_Ionian_Sea_OXY_2023_2025_DIONE)
Information:	Summary | License | FGDC | ISO 19115 | Metadata | Background | Subset | Make a graph

 

Variable	Optional Constraint #1		Optional Constraint #2		Minimum    or a List of Values	Maximum
time (time of measurements, UTC)	!= =~ <= >= = < >		!= =~ <= >= = < >		2004-09-11T18:52:07Z	2025-03-27T12:09:58Z
depth (depth of measurements, m)	!= =~ <= >= = < >		!= =~ <= >= = < >		2036.6
longitude (degrees_east)	!= =~ <= >= = < >		!= =~ <= >= = < >		15.3975
latitude (degrees_north)	!= =~ <= >= = < >		!= =~ <= >= = < >		37.54765
OXY	!= =~ <= >= = < >		!= =~ <= >= = < >		196.5323	228.0876
TIME_QC (TIME quality control flags)	!= =~ <= >= = < >		!= =~ <= >= = < >		1
DEPTH_QC (DEPTH quality control flags)	!= =~ <= >= = < >		!= =~ <= >= = < >		1
POSITION_QC	!= =~ <= >= = < >		!= =~ <= >= = < >		1

 

Server-side Functions

distinct()

orderBy orderByDescending orderByClosest orderByCount orderByLimit orderByMax orderByMin orderByMinMax orderByMean orderBySum (" time depth longitude latitude OXY TIME_QC DEPTH_QC POSITION_QC time depth longitude latitude OXY TIME_QC DEPTH_QC POSITION_QC time depth longitude latitude OXY TIME_QC DEPTH_QC POSITION_QC time depth longitude latitude OXY TIME_QC DEPTH_QC POSITION_QC time depth longitude latitude OXY TIME_QC DEPTH_QC POSITION_QC ")

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

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.094928727e+9, 1.743077398e+9;
    String ancillary_variables "TIME_QC";
    String axis "T";
    String cf_role "timeseries_id";
    String ioos_category "Time";
    String long_name "time of measurements";
    String sdn_P02_urn "SDN:P02::AYMD";
    String sdn_parameter_name "Elapsed time relative to 1970-01-01T00:00:00Z";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ELTMEP01/";
    String sdn_parameter_urn "SDN:P01::ELTMEP01";
    String sdn_uom_name "Seconds";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/UTBB/";
    String sdn_uom_urn "SDN:P06::UTBB";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float32 actual_range 2036.6, 2036.6;
    String ancillary_variables "DEPTH_QC";
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String ioos_category "Location";
    String long_name "depth of measurements";
    String positive "down";
    String sdn_P02_urn "SDN:P02::AHGT";
    String sdn_parameter_name "Depth (spatial coordinate) relative to water surface in the water body";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ADEPZZ01/";
    String sdn_parameter_urn "SDN:P01::ADEPZZ01";
    String sdn_uom_name "Meters";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/ULAA/";
    String sdn_uom_urn "SDN:P06::ULAA";
    String standard_name "depth";
    String units "m";
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float32 actual_range 15.3975, 15.3975;
    String ancillary_variables "POSITION_QC";
    String axis "X";
    String ioos_category "Location";
    String long_name "longitude of measurements";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Longitude east";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ALONZZ01/";
    String sdn_parameter_urn "SDN:P01::ALONZZ01";
    String sdn_uom_name "Degrees east";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/DEGE/";
    String sdn_uom_urn "SDN:P06::DEGE";
    String standard_name "longitude";
    String units "degrees_east";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float32 actual_range 37.54765, 37.54765;
    String ancillary_variables "POSITION_QC";
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String ioos_category "Location";
    String long_name "latitude of measurements";
    String sdn_P02_urn "SDN:P02::ALAT";
    String sdn_parameter_name "Latitude north";
    String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/ALATZZ01/";
    String sdn_parameter_urn "SDN:P01::ALATZZ01";
    String sdn_uom_name "Degrees north";
    String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/DEGN/";
    String sdn_uom_urn "SDN:P06::DEGN";
    String standard_name "latitude";
    String units "degrees_north";
  }
  OXY {
    Float32 _FillValue -999.0;
    Float32 actual_range 196.5323, 228.0876;
    String long_name "OXY";
    String sensor_manufacturer "Aanderaa";
    String sensor_manufacturer_uri "https://vocab.nerc.ac.uk/collection/L35/current/MAN0007/";
    String sensor_manufacturer_urn "SDN:L35::MAN0007";
    String sensor_model "AA optode 4831";
    String sensor_mount "mounted_on_seafloor_structure";
    String sensor_orientation "horizontal";
    String sensor_reference "https://vocab.nerc.ac.uk/collection/L22/current/TOOL1239/";
    String sensor_SeaVoX_L22_code "SDN:L22::TOOL1239";
    String sensor_type_name "dissolved gas sensor";
    String sensor_type_uri "https://vocab.nerc.ac.uk/collection/L05/current/351/";
  }
  TIME_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown, good_data, probably_good_data, potentially_correctable_bad_data,bad_data, nominal_value, interpolated_value, missing_value";
    String flag_values "0, 1, 2, 3, 4, 7, 8, 9";
    String long_name "TIME quality control flags";
  }
  DEPTH_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown, good_data, probably_good_data, potentially_correctable_bad_data,bad_data, nominal_value, interpolated_value, missing_value";
    String flag_values "0, 1, 2, 3, 4, 7, 8, 9";
    String long_name "DEPTH quality control flags";
    String standard_name "depth";
  }
  POSITION_QC {
    Byte _FillValue -127;
    String _Unsigned "false";
    Byte actual_range 1, 1;
    Float64 colorBarMaximum 10.0;
    Float64 colorBarMinimum 0.0;
    String conventions "OceanSITES QC Flags";
    String flag_meanings "unknown, good_data, probably_good_data, potentially_correctable_bad_data,bad_data, nominal_value, interpolated_value, missing_value";
    String flag_values "0, 1, 2, 3, 4, 7, 8, 9";
    String long_name "POSITION quality control flags";
  }
 }
  NC_GLOBAL {
    String cdm_data_type "TimeSeries";
    String cdm_timeseries_variables "depth,latitude,longitude,time";
    String Conventions "OceanSITES-1.5,SeaDataNet_1.0,COARDS, CF-1.10, ACDD-1.3";
    String creator_name "Istituto Nazionale Geofisica e Vulcanologia - Sez. Roma2";
    String creator_url "moist.it";
    String data_mode "D";
    String data_type "OceanSITES time-series data";
    Float64 Easternmost_Easting 15.3975;
    String emso_facility "Western Ionian Sea";
    String featureType "TimeSeries";
    String format_version "1.5";
    Float64 geospatial_lat_max 37.54765;
    Float64 geospatial_lat_min 37.54765;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max 15.3975;
    Float64 geospatial_lon_min 15.3975;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 2036.6;
    Float64 geospatial_vertical_min 2036.6;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String history 
"2025-07-30T20:54:54Z (local files)
2025-07-30T20:54:54Z https://erddap.moist.it/erddap/tabledap/EMSO_Western_Ionian_Sea_OXY_2023_2025_DIONE.html";
    String infoUrl "moist.it";
    String institution "Istituto Nazionale Geofisica e Vulcanologia - Sez. Roma2";
    String institution_edmo_code "3917";
    String institution_edmo_uri "https://edmo.seadatanet.org/report/3917";
    String keywords "chemistry, control, data, depth, DEPTH_QC, dione, Earth Science > Oceans > Ocean Chemistry > Oxygen, flags, geofisica, insea, istituto, latitude, longitude, nazionale, O2, ocean, oceans, oxy, oxygen, position, POSITION_QC, quality, roma2, sez, time, TIME_QC, vulcanologia";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "CC-BY-4.0";
    String license_url "https://spdx.org/licenses/CC-BY-4.0.json";
    String network "EMSO";
    Float64 Northernmost_Northing 37.54765;
    String principal_investigator "Davide Embriaco";
    String principal_investigator_email "davide.embriaco at ingv.it";
    String project "INSEA";
    String source "fixed benthic node";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 37.54765;
    String standard_name_vocabulary "CF Standard Name Table v70";
    String subsetVariables "depth, longitude, latitude, TIME_QC, DEPTH_QC, POSITION_QC";
    String summary "The sensor is used to monitor the oxygen concentration dissolved in sea water and to provide oxygen concentration values.";
    String time_coverage_end "2025-03-27T12:09:58Z";
    String time_coverage_start "2004-09-11T18:52:07Z";
    String title "INSEA Dione Oxygen data";
    String update_interval "void";
    Float64 Westernmost_Easting 15.3975;
  }
}

 

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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.
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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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