netcdf files/d506000/Y81259.nc {
  dimensions:
    obs = UNLIMITED;   // (17296975 currently)
    station = 252;
    id_len = 5;
    network_id_len = 4;
    nb = 2;
    nl = 3;
    nw = 33;
  variables:
    float lat(station=252);
      :name = "lat";
      :long_name = "Station latitude";
      :standard_name = "latitude";
      :units = "degree_north";
      :bounds = "lat_bounds";

    float lat_bounds(station=252, nb=2);
      :comment = "Latitude range for a station that has moved over time; for a fixed station, the bounds are the same.";

    float lon(station=252);
      :name = "lon";
      :long_name = "Station longitude";
      :standard_name = "longitude";
      :units = "degree_east";
      :bounds = "lon_bounds";

    float lon_bounds(station=252, nb=2);
      :comment = "Longitude range for a station that has moved over time; for a fixed station, the bounds are the same.";

    int elev(station=252);
      :name = "elev";
      :long_name = "Station elevation";
      :units = "m";
      :_FillValue = -32767; // int
      :bounds = "elev_bounds";

    int elev_bounds(station=252, nb=2);
      :comment = "Elevation range for a station that has moved over time; for a fixed station, the bounds are the same.";

    char station(station=252, id_len=5);
      :name = "station";
      :long_name = "Station identification";
      :cf_role = "timeseries_id";
      :network = "network_id";

    char network_id(station=252, network_id_len=4);
      :name = "network_id";
      :long_name = "Station network identification";

    int station_index(obs=17296975);
      :name = "station_index";
      :long_name = "Station index for each observation";
      :instance_dimension = "obs";

    double time(obs=17296975);
      :name = "time";
      :long_name = "Time of observation";
      :standard_name = "time";
      :units = "minutes since 1900-01-01 00:00:00.0 +0:00";
      :calendar = "standard";

    byte date_time_flag(obs=17296975);
      :name = "date_time_flag";
      :long_name = "Flag for the date/time";
      :flag_values = 0B, 1B, 2B; // byte
      :flag_meanings = "unchanged, original date/time thought to be correct\ncorrected, original date/time thought to be wrong\nestimated, original date/time is missing";

    short utc_offset(obs=17296975);
      :name = "utc_offset";
      :long_name = "Difference between UTC and local standard time";

    byte time_ind(obs=17296975);
      :name = "time_ind";
      :long_name = "Indicator for observation time";
      :flag_values = 0B, 1B, 2B; // byte
      :flag_meanings = "original time was local standard time to the nearest minute\noriginal time was local standard time to the nearest hour\noriginal time was local War time to the nearest minute";

    float slp(obs=17296975);
      :name = "slp";
      :long_name = "Sea-level pressure";
      :standard_name = "air_pressure_at_mean_sea_level";
      :units = "mbar";
      :_FillValue = -9999.9; // double

    byte slp_flag(obs=17296975);
      :name = "slp_flag";
      :long_name = "Flag for sea-level pressure";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable or obviously in error\nno entry was made on Form 1001";

    byte slp_flag2(obs=17296975);
      :name = "slp_flag2";
      :long_name = "Second flag for seal-level pressure";
      :flag_values = 0B, 1B; // byte
      :flag_meanings = "pressure value passed a 10mbar/hour consistency check\npressure value failed a 10mbar/hour consistency check";

    float tdry(obs=17296975);
      :name = "tdry";
      :long_name = "Dry bulb temperature";
      :standard_name = "air_temperature";
      :units = "degree_C";
      :_FillValue = -999.9; // double
      :comment = "Original value was degrees F";

    byte tdry_flag(obs=17296975);
      :name = "tdry_flag";
      :long_name = "Flag for dry bulb temperature";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable or obviously in error\nno entry was made on Form 1001";

    float twet(obs=17296975);
      :name = "twet";
      :long_name = "Wet bulb temperature";
      :units = "degree_C";
      :_FillValue = -999.9; // double
      :comment = "Original value was degrees F";

    byte twet_flag(obs=17296975);
      :name = "twet_flag";
      :long_name = "Flag for wet bulb temperature";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001 or field did not exist on form";

    float tdew(obs=17296975);
      :name = "tdew";
      :long_name = "Dew point temperature";
      :standard_name = "dew_point_temperature";
      :units = "degree_C";
      :_FillValue = -999.9; // double
      :comment = "Original value was degrees F";

    byte tdew_flag(obs=17296975);
      :name = "tdew_flag";
      :long_name = "Flag for dew point temperature";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001";

    float dd(obs=17296975);
      :name = "dd";
      :long_name = "Wind direction";
      :standard_name = "wind_from_direction";
      :units = "degree";
      :_FillValue = -999.0; // double
      :comment = "Original form value was compass direction (e.g. N, NNE, NE, etc.)\n0 = calm, 360 = N";

    byte dd_flag(obs=17296975);
      :name = "dd_flag";
      :long_name = "Flag for wind direction";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001";

    float ff(obs=17296975);
      :name = "ff";
      :long_name = "Wind speed";
      :standard_name = "wind_speed";
      :units = "m/s";
      :_FillValue = -999.9; // double

    byte ff_flag(obs=17296975);
      :name = "ff_flag";
      :long_name = "Flag for wind speed";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001";

    byte ff_ind(obs=17296975);
      :name = "ff_ind";
      :long_name = "Indicator for wind speed";
      :flag_values = 0B, 1B, 2B, 3B, 4B, 5B, 6B, 7B; // byte
      :flag_meanings = "original value was actual miles-per-hour\noriginal value was actual knots\noriginal value was actual m/s\noriginal value was descriptive miles-per-hour (see \'descriptive_wind_speed\')\noriginal value was estimated miles-per-hour\noriginal value was estimated knots\noriginal value was estimated m/s\nno entry was made on Form 1001, miles-per-hour assumed";
      :descriptive_wind_speed = "4 = light\n10 = gentle\n15 = moderate\n21 = fresh\n31= strong\n46 = gale\n63 = whole gale\n78 = hurricane";

    float gust(obs=17296975);
      :name = "gust";
      :long_name = "Wind gust";
      :standard_name = "wind_speed_of_gust";
      :units = "m/s";
      :_FillValue = -999.9; // double

    byte gust_flag(obs=17296975);
      :name = "gust_flag";
      :long_name = "Flag for wind gust";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001";
      :comment = "Indicator for wind speed also applies to wind gust.";

    float stnp(obs=17296975);
      :name = "stnp";
      :long_name = "Station pressure";
      :standard_name = "surface_air_pressure";
      :units = "mbar";
      :_FillValue = -9999.9; // double
      :comment = "Original form value was inches of mercury";

    byte stnp_flag(obs=17296975);
      :name = "stnp_flag";
      :long_name = "Flag for station pressure";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001 or field did not exist on form";

    float altim(obs=17296975);
      :name = "altim";
      :long_name = "Altimeter";
      :units = "mbar";
      :_FillValue = -9999.9; // double
      :comment = "Original form value was inches of mercury";

    byte altim_flag(obs=17296975);
      :name = "altim_flag";
      :long_name = "Flag for altimeter";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001 or field did not exist on form";

    float vsby(obs=17296975);
      :name = "vsby";
      :long_name = "Visibility";
      :standard_name = "visibility_in_air";
      :units = "m";
      :_FillValue = -999.9; // double
      :comment = "Original form value was miles";

    byte vsby_flag(obs=17296975);
      :name = "vsby_flag";
      :long_name = "Flag for visibility";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001 or field did not exist on form";

    byte ceil_class(obs=17296975);
      :name = "ceil_class";
      :long_name = "Ceiling classification";
      :flag_values = 0B, 1B, 2B, 3B, 4B, 5B, 6B, 7B, 8B, 9B, 10B; // byte
      :flag_meanings = "unlimited\naircraft reported\nfrom balloon\nestimated\nmeasured\nprecipitation ceiling\nvariable ceiling\nindefinite ceiling\nlast observed height of ceiling balloon before it disappeared without reaching the clouds\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001";

    int ceil(obs=17296975);
      :name = "ceil";
      :long_name = "Ceiling height";
      :units = "feet height";
      :_FillValue = -9999; // int

    byte ceil_flag(obs=17296975);
      :name = "ceil_flag";
      :long_name = "Flag for ceiling height";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "original value from Form 1001\ncorrected value\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001";

    byte cld_typ(obs=17296975, nl=3);
      :name = "cld_typ";
      :long_name = "Cloud type";
      :flag_values = 0B, 1B, 2B, 3B; // byte
      :flag_meanings = "low\nhigh\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001";

    byte cld_amt(obs=17296975, nl=3);
      :name = "cld_amt";
      :long_name = "Cloud amount";
      :flag_values = 0B, 1B, 2B, 3B, 4B, 5B, 6B, 7B, 8B, 9B, 10B, 11B, 14B, 15B; // byte
      :flag_meanings = "clear or less than 0.1 coverage\nthin scattered\nscattered\ndark scattered\nthin broken\nbroken\ndark broken\nthin overcast\novercast\ndark overcast\n10/10ths obscuration\npartial obscuration\noriginal Form 1001 entry was unreadable\nno entry was made on Form 1001 or field did not exist on form";

    int cld_hgt(obs=17296975, nl=3);
      :name = "cld_hgt";
      :long_name = "Cloud height";
      :units = "feet height";
      :_FillValue = -9999; // int

    byte wx(obs=17296975, nw=33);
      :name = "wx";
      :long_name = "Weather/phenomena indicators";
      :description = "Fields (0=no occurrence):\n0: Tornado\n1: Thunderstorm (1=light, 2=moderate, 3=severe)\n2: Rain (1=light, 2=moderate, 3=heavy)\n3: Rain showers (1=light, 2=moderate, 3=heavy)\n4: Sprinkles (1=light, 2=moderate, 3=heavy)\n5: Rain squall (1=light, 2=moderate, 3=heavy)\n6: Drizzle (1=light, 2=moderate, 3=heavy)\n7: Mist (1=light, 2=moderate, 3=heavy)\n8: Freezing rain (1=light, 2=moderate, 3=heavy)\n9: Freezing drizzle (1=light, 2=moderate, 3=heavy)\n10: Freezing mist (1=light, 2=moderate, 3=heavy)\n11: Sleet (1=light, 2=moderate, 3=heavy)\n12: Snow (1=light, 2=moderate, 3=heavy)\n13: Snow showers (1=light, 2=moderate, 3=heavy)\n14: Snow flurries (1=light, 2=moderate, 3=heavy)\n15: Snow squalls (1=light, 2=moderate, 3=heavy)\n16: Snow pellets (1=light, 2=moderate, 3=heavy)\n17: Snow grains (1=light, 2=moderate, 3=heavy)\n18: Ice crystals (1=light, 2=moderate, 3=heavy)\n19: Hail (1=light, 2=moderate, 3=heavy)\n20: Small hail (1=light, 2=moderate, 3=heavy)\n21: Fog (1=light, 2=moderate, 3=dense)\n22: Ground fog (1=light, 2=moderate, 3=dense)\n23: Ice fog (1=light, 2=moderate, 3=dense)\n24: Smoke (1=light, 2=moderate, 3=thick)\n25: Haze (1=light, 2=moderate, 3=thick, 4=damp haze 5=dry haze)\n26: Blowing snow (1=light, 2=moderate, 3=thick)\n27: Drifting snow (1=light, 2=moderate, 3=thick)\n28: Dust (1=light, 2=moderate, 3=thick)\n29: Blowing dust (1=light, 2=moderate, 3=thick)\n30: Blowing sand (1=light, 2=moderate, 3=thick)\n31: Hurricane\n32: Weather changeable";

  // global attributes:
  :description = "This data file contains hourly observations of U.S. stations that were recorded on Weather Bureau Form 1001 and digitized by the Climate Data Modernization Program.";
  :Conventions = "CF-1.7";
  :featureType = "timeSeries";
}