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Dataset Title:	dfo-rosie713-20230803T2125
Institution:	C-PROOF (Dataset ID: dfo-rosie713-20230810_CTDadjusted_erddap)
Range:	longitude = -144.93256 to -123.954285°E, latitude = 48.646736 to 49.995975°N, depth = -0.46598092 to 995.2131m, time = 2023-08-03T21:25:22Z to 2023-11-16T17:29:17Z
Information:	Summary \| License \| ISO 19115 \| Metadata \| Background \| Subset \| Data Access Form \| Files

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The Dataset Attribute Structure (.das) for this Dataset

Attributes {
 s {
  trajectory {
    UInt32 _ChunkSizes 1379683, 11;
    String cf_role "trajectory_id";
    String comment "A trajectory is a single deployment of a glider and may span multiple data files.";
    String coordinates "depth latitude longitude pind";
    String long_name "Trajectory/Deployment Name";
  }
  time {
    String _CoordinateAxisType "Time";
    Float64 actual_range 1.691097922e+9, 1.700155757e+9;
    String axis "T";
    String calendar "gregorian";
    String ioos_category "Time";
    String long_name "Time";
    String observation_type "measured";
    String source "sci_m_present_time";
    String standard_name "time";
    String time_origin "01-JAN-1970 00:00:00";
    String units "seconds since 1970-01-01T00:00:00Z";
  }
  latitude {
    String _CoordinateAxisType "Lat";
    Float64 _FillValue NaN;
    Float64 actual_range 48.64673756701322, 49.99597645597497;
    String axis "Y";
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String comment "Estimated between surface fixes";
    String coordinate_reference_frame "urn:ogc:crs:EPSG::4326";
    String ioos_category "Location";
    String long_name "Latitude";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String reference "WGS84";
    String references "WGS84";
    String source "m_lat";
    String standard_name "latitude";
    String units "degrees_north";
    Float64 valid_max 90.0;
    Float64 valid_min -90.0;
  }
  longitude {
    String _CoordinateAxisType "Lon";
    Float64 _FillValue NaN;
    Float64 actual_range -144.93255231134097, -123.95428179894995;
    String axis "X";
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String comment "Estimated between surface fixes";
    String coordinate_reference_frame "urn:ogc:crs:EPSG::4326";
    String ioos_category "Location";
    String long_name "Longitude";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String reference "WGS84";
    String references "WGS84";
    String source "m_lon";
    String standard_name "longitude";
    String units "degrees_east";
    Float64 valid_max 180.0;
    Float64 valid_min -180.0;
  }
  depth {
    String _CoordinateAxisType "Height";
    String _CoordinateZisPositive "down";
    Float64 _FillValue NaN;
    String accuracy "1";
    Float64 actual_range -0.4659809306731335, 995.2130660936998;
    String axis "Z";
    Float64 colorBarMaximum 8000.0;
    Float64 colorBarMinimum -8000.0;
    String colorBarPalette "TopographyDepth";
    String comment "from science pressure and interpolated";
    String instrument "instrument_ctd";
    String ioos_category "Location";
    String long_name "glider depth";
    Float64 missing_value NaN;
    String observation_type "calulated";
    String platform "platform";
    String positive "down";
    String precision "2";
    String reference_datum "surface";
    String resolution "0.02";
    String source "pressure";
    String standard_name "depth";
    String units "m";
    Float64 valid_max 2000.0;
    Float64 valid_min 0.0;
  }
  heading {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 6.280523104328134;
    String coordinates "depth longitude latitude";
    String long_name "glider heading angle";
    Float64 missing_value NaN;
    String platform "platform";
    String source "m_heading";
    String standard_name "platform_orientation";
    String units "rad";
  }
  pitch {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range -0.8458191974488787, 0.7300199583676572;
    String coordinates "depth longitude latitude";
    String long_name "glider pitch angle";
    Float64 missing_value NaN;
    String platform "platform";
    String source "m_pitch";
    String standard_name "platform_pitch_angle";
    String units "rad";
  }
  roll {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range -0.35440922676571496, 0.2594817037660723;
    String coordinates "depth longitude latitude";
    String long_name "glider roll angle";
    Float64 missing_value NaN;
    String platform "platform";
    String source "m_roll";
    String standard_name "platform_roll_angle";
    String units "rad";
  }
  waypoint_latitude {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 0.004135854093171076, 50.0;
    Float64 colorBarMaximum 90.0;
    Float64 colorBarMinimum -90.0;
    String coordinates "depth longitude latitude";
    String long_name "waypoint latitude";
    Float64 missing_value NaN;
    String platform "platform";
    String source "c_wpt_lat";
    String standard_name "latitude";
    String units "degree_north";
  }
  waypoint_longitude {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range -145.0, -0.010633849641251913;
    Float64 colorBarMaximum 180.0;
    Float64 colorBarMinimum -180.0;
    String coordinates "depth longitude latitude";
    String long_name "waypoint longitude";
    Float64 missing_value NaN;
    String platform "platform";
    String source "c_wpt_lon";
    String standard_name "longitude";
    String units "degree_east";
  }
  conductivity {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    String accuracy "0.0003";
    Float64 actual_range 3.154400110244751, 4.396790027618408;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 30.0;
    String comment "uncorrected conductivity";
    String coordinates "depth longitude latitude";
    String instrument "instrument_ctd";
    String long_name "water conductivity";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String precision "0.0001";
    String resolution "0.00002";
    String source "sci_water_cond";
    String standard_name "sea_water_electrical_conductivity";
    String units "S m-1";
    Float64 valid_max 10.0;
    Float64 valid_min 0.0;
  }
  temperature {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    String accuracy "0.002";
    Float64 actual_range 2.9484000205993652, 23.953800201416016;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String comment "uncorrected temperature [degC]";
    String coordinates "depth longitude latitude";
    String instrument "instrument_ctd";
    String long_name "water temperature";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String precision "0.001";
    String resolution "0.0002";
    String source "sci_water_temp";
    String standard_name "sea_water_temperature";
    String units "Celsius";
    Float64 valid_max 50.0;
    Float64 valid_min -5.0;
  }
  pressure {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    String accuracy "1";
    Float64 actual_range -0.4699999839067459, 1006.1699676513672;
    Float64 colorBarMaximum 5000.0;
    Float64 colorBarMinimum 0.0;
    String comment "ctd pressure sensor";
    String conversion "bar2dbar";
    String coordinates "depth longitude latitude";
    String instrument "instrument_ctd";
    String long_name "water pressure";
    Float64 missing_value NaN;
    String observation_type "measured";
    String platform "platform";
    String positive "down";
    String precision "2";
    String reference_datum "sea-surface";
    String resolution "0.02";
    String source "sci_water_pressure";
    String standard_name "sea_water_pressure";
    String units "dbar";
    Float64 valid_max 2000.0;
    Float64 valid_min 0.0;
  }
  chlorophyll {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range -0.2288276415668865, 14.169300079345703;
    Float64 colorBarMaximum 30.0;
    Float64 colorBarMinimum 0.03;
    String colorBarScale "Log";
    String coordinates "depth longitude latitude";
    String long_name "chlorophyll";
    Float64 missing_value NaN;
    String platform "platform";
    String source "sci_flbbcd_chlor_units";
    String standard_name "concentration_of_chlorophyll_in_sea_water";
    String units "mg m-3";
  }
  cdom {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range -15.837499618530273, 33.48500061035156;
    String coordinates "depth longitude latitude";
    String long_name "CDOM";
    Float64 missing_value NaN;
    String platform "platform";
    String source "sci_flbbcd_cdom_units";
    String units "ppb";
  }
  backscatter_700 {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 9.405000309925526e-5, 0.00853973999619484;
    String coordinates "depth longitude latitude";
    String long_name "700 nm wavelength backscatter";
    Float64 missing_value NaN;
    String platform "platform";
    String source "sci_flbbcd_bb_units";
    String units "1";
  }
  oxygen_concentration {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range -540.3060302734375, 316.7740280365886;
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "depth longitude latitude";
    String long_name "oxygen concentration";
    Float64 missing_value NaN;
    String platform "platform";
    String source "sci_oxy4_oxygen";
    String standard_name "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water";
    String units "umol l-1";
  }
  temperature_oxygen {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 0.1273899404243002, 23.60300064086914;
    Float64 colorBarMaximum 500.0;
    Float64 colorBarMinimum 0.0;
    String coordinates "depth longitude latitude";
    String long_name "oxygen sensor temperature";
    Float64 missing_value NaN;
    String platform "platform";
    String source "sci_oxy4_temp";
    String standard_name "temperature_of_sensor_for_oxygen_in_sea_water";
    String units "Celsius";
  }
  distance_over_ground {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 0.0, 3609.7178184877953;
    String coordinates "depth longitude latitude";
    String long_name "distance over ground flown since mission start";
    String method "get_distance_over_ground";
    String sources "latitude longitude";
    String units "km";
  }
  salinity {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    String accuracy "0.01";
    Float64 actual_range 2.3346299738766834, 34.53780080921326;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String comment "uncorrected salinity [psu]";
    String coordinates "depth longitude latitude";
    String instrument "instrument_ctd";
    String long_name "water salinity";
    String method "get_derived_eos_raw";
    Float64 missing_value NaN;
    String observation_type "calulated";
    String platform "platform";
    String precision "0.01";
    String resolution "0.001";
    String sources "conductivity temperature pressure";
    String standard_name "sea_water_practical_salinity";
    String units "1e-3";
    Float64 valid_max 40.0;
    Float64 valid_min 0.0;
  }
  potential_density {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    String accuracy "0.01";
    Float64 actual_range 1001.1141216184309, 1027.4191962784687;
    Float64 colorBarMaximum 28.0;
    Float64 colorBarMinimum 20.0;
    String comment "raw, uncorrected salinity";
    String coordinates "depth longitude latitude";
    String instrument "instrument_ctd";
    String long_name "water potential density";
    String method "get_derived_eos_raw";
    Float64 missing_value NaN;
    String observation_type "calulated";
    String platform "platform";
    String precision "0.01";
    String resolution "0.001";
    String sources "salinity temperature pressure";
    String standard_name "sea_water_potential_density";
    String units "kg m-3";
  }
  density {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    String accuracy "0.01";
    Float64 actual_range 1001.1944403958092, 1031.9151644448225;
    Float64 colorBarMaximum 28.0;
    Float64 colorBarMinimum 20.0;
    String comment "unadjusted density";
    String coordinates "depth longitude latitude";
    String instrument "instrument_ctd";
    String long_name "Density";
    String method "get_derived_eos_raw";
    Float64 missing_value NaN;
    String observation_type "calulated";
    String platform "platform";
    String precision "0.01";
    String resolution "0.001";
    String sources "salinity temperature pressure";
    String standard_name "sea_water_density";
    String units "kg m-3";
    Float64 valid_max 1040.0;
    Float64 valid_min 1000.0;
  }
  potential_temperature {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    String accuracy "0.002";
    Float64 actual_range 2.8817056189848422, 19.66227507358233;
    Float64 colorBarMaximum 32.0;
    Float64 colorBarMinimum 0.0;
    String comment "raw, uncorrected salinity";
    String coordinates "depth longitude latitude";
    String instrument "instrument_ctd";
    String long_name "water potential temperature";
    String method "get_derived_eos_raw";
    Float64 missing_value NaN;
    String observation_type "calulated";
    String platform "platform";
    String precision "0.001";
    String resolution "0.0001";
    String sources "salinity temperature pressure";
    String standard_name "sea_water_potential_temperature";
    String units "Celsius";
  }
  profile_index {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range -0.0, 1681.0;
    String comment "N = inside profile N, N + 0.5 = between profiles N and N + 1";
    String coordinates "depth longitude latitude";
    Float64 filt_length 10;
    String long_name "profile index";
    String method "get_profiles_new";
    Float64 min_dp 10.0;
    Float64 min_nsamples 50;
    Float64 missing_value NaN;
    String sources "time pressure";
    String units "1";
  }
  profile_direction {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range -1.0, 1.0;
    Float64 colorBarMaximum 360.0;
    Float64 colorBarMinimum 0.0;
    String comment "-1 = ascending, 0 = inflecting or stalled, 1 = descending";
    String coordinates "depth longitude latitude";
    String long_name "glider vertical speed direction";
    String method "get_profiles_new";
    Float64 missing_value NaN;
    String sources "time pressure";
    String units "1";
  }
  conductivity_adjusted {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 3.154400110244751, 4.396790027618408;
    Float64 colorBarMaximum 40.0;
    Float64 colorBarMinimum 30.0;
    String comment "adjusted conductivity";
    String coordinates "depth latitude longitude";
    String long_name "Sea Water Electrical Conductivity";
    Float64 missing_value NaN;
    String processing_date "C-PROOF_SBE_CTDProcessingReport_v0.2.pdf";
    String processing_report "CTD_dfo-rosie713-20230810";
    String standard_name "sea_water_electrical_conductivity";
  }
  temperature_adjusted {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 2.948633664210549, 19.66168555709422;
    String comment "adjusted temperature [degC]";
    String coordinates "depth latitude longitude";
    String long_name "Temperature Adjusted";
    Float64 missing_value NaN;
    String processing_date "C-PROOF_SBE_CTDProcessingReport_v0.2.pdf";
    String processing_report "CTD_dfo-rosie713-20230810";
  }
  salinity_adjusted {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 2.334599363063004, 34.39593928604068;
    Float64 colorBarMaximum 37.0;
    Float64 colorBarMinimum 32.0;
    String comment "adjusted salinity [psu]";
    String coordinates "depth latitude longitude";
    String long_name "Sea Water Practical Salinity";
    Float64 missing_value NaN;
    String processing_date "20251107";
    String processing_protocol "C-PROOF_SBE_CTDProcessingReport_v0.2.pdf";
    String processing_report "CTD_dfo-rosie713-20230810";
    String standard_name "sea_water_practical_salinity";
    String units "PSU";
  }
  density_adjusted {
    UInt32 _ChunkSizes 2069524;
    Float64 _FillValue NaN;
    Float64 actual_range 1001.1124912431917, 1032.0489781449849;
    String comment "density from adjusted salinity [psu] and temperature [degC]";
    String coordinates "depth latitude longitude";
    String long_name "Density Adjusted";
    Float64 missing_value NaN;
  }
  pind {
    Float64 _FillValue NaN;
    Float64 actual_range -0.0, 1681.0;
    String comment "N = inside profile N, N + 0.5 = between profiles N and N + 1";
    String coordinates "depth latitude longitude";
    Float64 filt_length 10;
    String long_name "profile index";
    String method "get_profiles_new";
    Float64 min_dp 10.0;
    Float64 min_nsamples 50;
    Float64 missing_value NaN;
    String sources "time pressure";
    String units "1";
  }
 }
  NC_GLOBAL {
    String _NCProperties "version=2,netcdf=4.9.3,hdf5=1.14.6";
    String acknowledgement "Funding from Fisheries and Oceans Canada, Canadian Foundation for Innovation, BC Knowledge Development Fund";
    String cdm_data_type "Trajectory";
    String cdm_trajectory_variables "trajectory";
    String citation "\"Klymak, J., & Ross, T. (2025). C-PROOF Underwater Glider Deployment Datasets [Data set]. Canadian-Pacific Robotic Ocean Observing Facility.doi:10.82534/44DS-K310\"";
    String comment "Line P deployment";
    String contributor_name "James Pegg, Tetjana Ross, Jody Klymak, Hayley Dosser, Seth Fleming-Alho";
    String contributor_role "Lead Technician, Principal Investigator, Co-PI, Ocean Glider Scientist, Aquatic Technician";
    String Conventions "CF-1.6";
    String creator_email "jklymak@uvic.ca";
    String creator_name "Jody Klymak";
    String creator_type "person";
    String creator_url "http://cproof.uvic.ca";
    String ctd "{'make': 'Seabird', 'model': 'SlocumCTD', 'serial': '9507', 'long_name': 'Seabird SlocumCTD', 'make_model': 'Seabird SlocumCTD', 'factory_calibrated': '2019-01-13', 'calibration_date': '2019-01-13', 'calibration_report': ' ', 'comment': ' '}";
    String data_mode "P";
    String date_created "2023-11-30T17:33:36Z";
    String date_issued "2023-11-30T17:33:36Z";
    String deployment_end "2023-11-16T17:29:17.000000000";
    String deployment_id "4";
    String deployment_latitude "48.89";
    String deployment_longitude "-126.64";
    String deployment_name "dfo-rosie713-20230810";
    String deployment_start "2023-08-03T21:25:22.000000000";
    String deployment_station "Offshore Tofino (70m isobath)";
    String deployment_vessel "CCGS John P. Tully";
    Float64 Easternmost_Easting -123.95428179894995;
    String featureType "Trajectory";
    String format_version "IOOS_Glider_NetCDF_v2.0.nc";
    Float64 geospatial_lat_max 49.99597645597497;
    Float64 geospatial_lat_min 48.64673756701322;
    String geospatial_lat_units "degrees_north";
    Float64 geospatial_lon_max -123.95428179894995;
    Float64 geospatial_lon_min -144.93255231134097;
    String geospatial_lon_units "degrees_east";
    Float64 geospatial_vertical_max 995.2130660936998;
    Float64 geospatial_vertical_min -0.4659809306731335;
    String geospatial_vertical_positive "down";
    String geospatial_vertical_units "m";
    String glider_instrument_name "slocum";
    String glider_model "Slocum G3 Deep";
    String glider_name "dfo-rosie";
    String glider_serial "713";
    String glider_wmo "4803919";
    String history 
"CPROOF glider toolbox version: pre-tag
2025-12-06T06:53:56Z (local files)
2025-12-06T06:53:56Z https://erddap-test.taimaz.ca/tabledap/dfo-rosie713-20230810_CTDadjusted_erddap.das";
    String id "dfo-rosie713-20230803T2125";
    String infoUrl "https://cproof.uvic.ca";
    String institution "C-PROOF";
    String keywords "Autonomous Underwater Vehicles, AUVS, Conductivity, Density, Ocean Pressure, Ocean Temperature, Oceans, Salinity, Salinity/Density, Water Pressure, Water Temperature";
    String keywords_vocabulary "GCMD Science Keywords";
    String license "This data may be redistributed and used without restriction or warranty";
    String Metadata_Conventions "CF-1.6, Unidata Dataset Discovery v1.0";
    String metadata_link "https://cproof.uvic.ca";
    String naming_authority "ca.uvic.cproof";
    String netcdf_version "4.0";
    String network "OceanGliders > BOON > Northeast Pacific Ocean > C-PROOF, IOOS";
    Float64 Northernmost_Northing 49.99597645597497;
    String optics "{'make': 'Wetlabs', 'model': 'FLBBCDSLC', 'serial': '5059'}";
    String oxygen "{'make': 'AADI', 'model': 'Optode4831', 'serial': '665'}";
    String platform_type "Slocum Glider";
    String pressure "{'make': 'Micron', 'model': 'Pressure', 'serial': '104702'}";
    String processing_details "Processing details are located on the C-PROOF website for this mission under the reports tab.";
    String processing_level "Level 0 (L0) processed data timeseries; no corrections or data screening";
    String processing_tech "Lauryn Talbot; ltalbot@uvic.ca";
    String project "Line P";
    String project_url "https://www.dfo-mpo.gc.ca/science/data-donnees/line-p/index-eng.html";
    String publisher_email "jklymak@uvic.ca";
    String publisher_name "Jody Klymak";
    String publisher_type "person";
    String publisher_url "http://cproof.uvic.ca";
    String references "https://doi.org/10.82534/44DS-K310";
    String sea_name "Northeast Pacific Ocean";
    String source "Observational data from a profiling glider.";
    String sourceUrl "(local files)";
    Float64 Southernmost_Northing 48.64673756701322;
    String standard_name_vocabulary "CF Standard Name Table v49";
    String subsetVariables "trajectory";
    String summary "Glider deployed near off the John P. Tully as part of the C-PROOF glider program. Glider is on a repeat DFO hydrographic sampling line - Line P - running from near Vancouver Island to Ocean Station Papa in the NE Pacific. On this mission, the glider reached Ocean Station Papa and returned to Tofino for recovery.";
    String time_coverage_end "2023-11-16T17:29:17Z";
    String time_coverage_start "2023-08-03T21:25:22Z";
    String title "dfo-rosie713-20230803T2125";
    String transmission_system "IRIDIUM";
    Float64 Westernmost_Easting -144.93255231134097;
    String wmo_id "4803919";
  }
}

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.