netcdf files/g/d628001/ll25/1972/ll25.006_gp.1972 {
  dimensions:
    lon = 144;
    lat = 73;
    reftime = 1;
    time = 1;
  variables:
    int LatLon_Projection;
      :grid_mapping_name = "latitude_longitude";
      :earth_radius = 6367470.0; // double

    float lat(lat=73);
      :units = "degrees_north";

    float lon(lon=144);
      :units = "degrees_east";

    double reftime;
      :units = "Hour since 1981-01-01T00:00:00Z";
      :standard_name = "forecast_reference_time";
      :long_name = "GRIB reference time";
      :calendar = "proleptic_gregorian";

    double time(time=1);
      :units = "Hour since 1981-01-01T00:00:00Z";
      :standard_name = "time";
      :long_name = "GRIB forecast or observation time";
      :calendar = "proleptic_gregorian";

    float Geopotential_surface(time=1, lat=73, lon=144);
      :long_name = "Geopotential @ Ground or water surface";
      :units = "m^2 s^-2";
      :description = "Geopotential";
      :missing_value = NaNf; // float
      :grid_mapping = "LatLon_Projection";
      :coordinates = "reftime time lat lon ";
      :Grib_Variable_Id = "VAR_34-241-200-6_L1";
      :Grib1_Center = 34; // int
      :Grib1_Subcenter = 241; // int
      :Grib1_TableVersion = 200; // int
      :Grib1_Parameter = 6; // int
      :Grib1_Parameter_Name = "GP";
      :Grib1_Level_Type = 1; // int
      :Grib1_Level_Desc = "Ground or water surface";
      :Grib1_Interval_Type = -1; // int
      :Grib1_Interval_Name = "Unknown Time Range Indicator -1";

  // global attributes:
  :Originating_or_generating_Center = "Tokyo (RSMC), Japan Meteorological Agency";
  :Originating_or_generating_Subcenter = "Reanalysis project";
  :GRIB_table_version = "0,200";
  :Generating_process_or_model = "Japanese 55-year Reanalysis (JRA-55)";
  :file_format = "GRIB-1";
  :Conventions = "CF-1.6";
  :history = "Read using CDM IOSP GribCollection v3";
  :featureType = "GRID";
}