netcdf otherdata/LinePGrid.nc {
  dimensions:
    depth = 5000;
    string8 = 8;
    mission_ind = 204;
    station_ind = 27;
  variables:
    double depth(depth=5000);
      :_FillValue = NaN; // double
      :standard_name = "depth";
      :long_name = "depth of CTD [m]";
      :units = "m";
      :positive = "down";
      :comment = "Data was interpolated onto 1-m grid from data that was almost on a 1-m grid.  There will be some smoothing.";

    long mission_ind(mission_ind=204);
      :long_name = "mission index";
      :comment = "index into the mission list";

    long station_ind(station_ind=27);
      :long_name = "mission index";
      :comment = "index in the station list.  Note that P1 is 0, P25 is 24 P35 is 25 and P26 is 26.";

    double temperature(depth=5000, mission_ind=204, station_ind=27);
      :_FillValue = NaN; // double
      :standard_name = "sea_water_temperature";
      :units = "Celsius";
      :long_name = "Temperature [C]";
      :comment = "From various CTDs so variable accuracy";

    double pressure(depth=5000, mission_ind=204, station_ind=27);
      :_FillValue = NaN; // double
      :standard_name = "sea_water_pressure";
      :units = "dbar";
      :long_name = "Pressure [dbar]";

    double salinity(depth=5000, mission_ind=204, station_ind=27);
      :units = "psu";
      :long_name = "Salinity [psu]";
      :comment = "From various CTDs, probably from EOS80";
      :standard_name = "sea_water_practical_salinity";
      :_FillValue = NaN; // double

    double oxygen(depth=5000, mission_ind=204, station_ind=27);
      :_FillValue = NaN; // double
      :standard_name = "mole_concentration_of_dissolved_molecular_oxygen_in_sea_water";
      :units = "umol l-1";
      :long_name = "O2 concentration [umol l^-1]";
      :comment = "Many older CTDs did not have O2";

    double conductivity(depth=5000, mission_ind=204, station_ind=27);
      :standard_name = "sea_water_electrical_conductivity";
      :long_name = "Conductivity [S m^-1]";
      :comment = "Conductivty not reported for older CTDs";
      :_FillValue = NaN; // double
      :units = "S m-1";

    double time(mission_ind=204, station_ind=27);
      :_FillValue = NaN; // double
      :units = "days since 1900-01-01";
      :calendar = "proleptic_gregorian";
      :standard_name = "time";
      :long_name = "CTD cast time";

    double longitude(mission_ind=204, station_ind=27);
      :_FillValue = NaN; // double
      :long_name = "longitude [E]";
      :standard_name = "longitude";
      :units = "degrees_east";
      :comment = "west is less than zero";

    double latitude(mission_ind=204, station_ind=27);
      :_FillValue = NaN; // double
      :long_name = "latitude [N]";
      :standard_name = "latitude";
      :units = "degrees_north";

    String mission_id(mission_ind=204, station_ind=27);

    String project(mission_ind=204, station_ind=27);

    String instrument_model(mission_ind=204, station_ind=27);

    String instrument_serial_number(mission_ind=204, station_ind=27);

    String filename(mission_ind=204, station_ind=27);

    long maxdepth(mission_ind=204, station_ind=27);
      :comment = "Maximum cast depth for this station for this mission";
      :description = "maximum depth of data in profile";
      :long_name = "Maximum Cast depth";
      :positive = "down";
      :units = "m";

    String station_id(station_ind=27);
      :long_name = "Station Name";

    double station_alongx(station_ind=27);
      :long_name = "distance along line P [km]";
      :comment = "Nominal station km along LineP; P1=0, P26=-1423; negative because lineP goes to the west";
      :description = "nominal station location";
      :_FillValue = NaN; // double
      :units = "km";

    double alongx(mission_ind=204, station_ind=27);
      :description = "station location interpolated by longitude";
      :long_name = "distance along line P [km]";
      :comment = "km along LineP; P1=0, P26=-1423; negative because lineP goes to the west";
      :_FillValue = NaN; // double
      :units = "km";

    double ncasts(mission_ind=204);
      :_FillValue = NaN; // double

    double furthest(mission_ind=204);
      :_FillValue = NaN; // double

    char mission(mission_ind=204, string8=8);
      :comment = "IOS mission name. Note these are not necessarily in chronological order";
      :long_name = "Mission Name";

    double mission_time(mission_ind=204);
      :_FillValue = NaN; // double
      :units = "days since 1900-01-01";
      :calendar = "proleptic_gregorian";
      :standard_name = "time";
      :long_name = "Average mission time";

    String station_name(station_ind=27);

    double potential_density(depth=5000, mission_ind=204, station_ind=27);
      :comment = "potential density relative to 0 dbar, using EOS80";
      :units = "kg m-3";
      :long_name = "potential density [kg m-3]";
      :_FillValue = NaN; // double
      :standard_name = "sea_water_potential_density";

    double potential_temperature(depth=5000, mission_ind=204, station_ind=27);
      :units = "Celsius";
      :comment = "potential temperature relative to 0 dbar, using EOS80";
      :long_name = "potential temperature [C]";
      :_FillValue = NaN; // double
      :standard_name = "sea_water_potential_temperature";

    double station_lon(station_ind=27);
      :comment = "Nominal station location. west is less than zero";
      :_FillValue = NaN; // double
      :long_name = "longitude [E]";
      :standard_name = "longitude";
      :units = "degrees_east";

    double station_lat(station_ind=27);
      :comment = "Nominal station location";
      :_FillValue = NaN; // double
      :long_name = "latitude [N]";
      :standard_name = "latitude";
      :units = "degrees_north";

  // global attributes:
  :Conventions = "CF-1.11";
  :title = "Line P cruise grid";
  :institution = "Institute of Ocean Sciences, Sidney, BC, Canada";
  :creator = "Jody Klymak";
  :creator_institution = "University of Victoria, BC, Canada";
  :email = "jklymak@uvic.ca";
  :source = "Ship CTD data, collected since 1968 along LineP by IOS";
  :history = "CTD data from waterproperties.ca, defined area \"LineP\".  Binned by ProcessStations.ipynb";
  :comment = "All casts in \"LineP\" area were downloaded from waterproperties.ca. Profile data was approximately 1-m, but not exactly (for some reason), so depth was interpolated to exactly 1-m (leading to a bit of interpolation smoothing).  Using the nominal stations locations, casts were assigned to a station if they were within 0.12 degrees latitude of the station.  For each mission, the deepest profile at each station was retained.  A mission was retained if it has at least 4 casts, and the furthest cast was at least  as far out as P10.";
  :references = "https://github.com/jklymak/LinePGrid/";
  :keywords = "CTD, Oceans, Ocean Pressure, Water Pressure, Oceans, Ocean Temperature, Water Temperature, Oceans, Salinity/Density, Conductivity, Oceans, Salinity/Density, Density, Oceans, Salinity/Density, Salinity";
  :keywords_vocabulary = "GCMD Science Keywords";
  :license = "This data may be redistributed and used without restriction or warranty";
  :sea_name = "Coastal Waters of Southeast Alaska and British Columbia";
  :standard_name_vocabulary = "CF STandard Name Table v85";
}