netcdf files/g/d093001/1996/pwat.gdas.199606.grb2 {
  dimensions:
    lon = 1152;
    lat = 576;
    time = 720;
  variables:
    int GaussLatLon_Projection;
      :grid_mapping_name = "latitude_longitude";
      :earth_radius = 6371229.0; // double

    float lat(lat=576);
      :units = "degrees_north";
      :gaussian_lats = "true";

    float lon(lon=1152);
      :units = "degrees_east";

    double time(time=720);
      :units = "Hour since 1996-06-01T00:00:00Z";
      :standard_name = "time";
      :long_name = "GRIB forecast or observation time";
      :calendar = "proleptic_gregorian";

    double reftime(time=720);
      :standard_name = "forecast_reference_time";
      :long_name = "GRIB reference time";
      :calendar = "proleptic_gregorian";
      :units = "Hour since 1996-06-01T00:00:00Z";

    float Precipitable_water_entire_atmosphere_single_layer(time=720, lat=576, lon=1152);
      :long_name = "Precipitable water @ Entire atmosphere layer";
      :units = "kg.m-2";
      :abbreviation = "PWAT";
      :missing_value = NaNf; // float
      :grid_mapping = "GaussLatLon_Projection";
      :coordinates = "reftime time lat lon ";
      :Grib_Variable_Id = "VAR_0-1-3_L200";
      :Grib2_Parameter = 0, 1, 3; // int
      :Grib2_Parameter_Discipline = "Meteorological products";
      :Grib2_Parameter_Category = "Moisture";
      :Grib2_Parameter_Name = "Precipitable water";
      :Grib2_Level_Type = 200; // int
      :Grib2_Level_Desc = "Entire atmosphere layer";
      :Grib2_Generating_Process_Type = "Forecast";
      :Grib2_Statistical_Process_Type = "UnknownStatType--1";

  // global attributes:
  :Originating_or_generating_Center = "US National Weather Service, National Centres for Environmental Prediction (NCEP)";
  :Originating_or_generating_Subcenter = "0";
  :GRIB_table_version = "2,1";
  :Type_of_generating_process = "Forecast";
  :Analysis_or_forecast_generating_process_identifier_defined_by_originating_centre = "Analysis from GDAS (Global Data Assimilation System)";
  :file_format = "GRIB-2";
  :Conventions = "CF-1.6";
  :history = "Read using CDM IOSP GribCollection v3";
  :featureType = "GRID";
}