- station: Station ID
- date: Valid date of forecast
- valid_hour_utc: Valid hour of forecast in UTC time
- valid_hour_pst: Valid hour of forecast in Pacific Standard Time
- forecast_hour: Hours since forecast initiated
- day_of_year: Julian day
- sine_doy: Sine of the Julian day
- row: Row Index of grid point
- col: Column Index of grid point
- asp: Aspect angle of slope (degrees)
- dem: Elevation (m)
- slope: Slope angle (degrees)
- T_f: Temperature (C)
- T_f_mean: Mean temperature in 3x3 neighborhood (C)
- T_f_max: Maximum temperature in 3x3 neighborhood (C)
- T_f_min: Minimum temperature in 3x3 neighborhood (C)
- T_f_median: Median temperature in 3x3 neighborhood (C)
- T_f_correlate: Correlation coefficient of 3x3 neighborhood
- T_f_gradient: Magnitude of spatial gradient in 3x3 neighborhood
- av_dswrf_sfc_f: Hourly averaged downward shortwave radiation (W m-2)
- av_dswrf_sfc_f_mean: Hourly averaged downward shortwave radiation mean in 3x3 neighborhood (W m-2)
- av_dswrf_sfc_f_max: Hourly averaged downward shortwave radiation maximum in 3x3 neighborhood (W m-2)
- av_dswrf_sfc_f_min: Hourly averaged downward shortwave radiation minimum in 3x3 neighborhood (W m-2)
- av_dswrf_sfc_f_median: Hourly averaged downward shortwave radiation median in 3x3 neighborhood (W m-2)
- av_dswrf_sfc_f_correlate: Hourly averaged downward shortwave radiation correlation coefficent in 3x3 neighborhood ()
- av_dswrf_sfc_f_gradient: Hourly averaged downward shortwave radiation gradient magnitude in 3x3 neighborhood (W m-2)
- cloud_cover_f: Cloud cover percentage
- cloud_cover_f_mean: Cloud cover percentage mean in 3x3 neighborhood
- cloud_cover_f_max: Cloud cover percentage max in 3x3 neighborhood
- cloud_cover_f_min: Cloud cover percentage min in 3x3 neighborhood
- cloud_cover_f_median: Cloud cover percentage median in 3x3 neighborhood
- cloud_cover_f_correlate: Cloud cover percentage correlation coefficient in 3x3 neighborhood
- cloud_cover_f_gradient: Cloud cover percentage gradient magnitude in 3x3 neighborhood
- dewpt_f: Dewpoint (C)
- dewpt_f_mean: Dewpoint mean in 3x3 neighborhood (C)
- dewpt_f_max: Dewpoint max in 3x3 neighborhood (C)
- dewpt_f_min: Dewpoint min in 3x3 neighborhood (C)
- dewpt_f_median: Dewpoint median in 3x3 neighborhood (C)
- dewpt_f_correlate: Dewpoint correlation coefficient in 3x3 neighborhood (C)
- dewpt_f_gradient: Dewpoint gradient magnitude in 3x3 neighborhood (C)
- index: Observation index
- av_dswrf_sfc: Observed hourly averaged downward shortwave radiation (W m-2)
- lat: Latitude of observation point (degrees)
- lon: Longitude of observation point (degrees)
- add_diff: Difference between forecast and observed downward shortwave radiation (W m-2)