Precipitation during the driest quarter 0.591569 Precipitation during the hottest quarter 0.800321 Carbon content of soil 1.19166 Nitrogen content of soil 1.28551 Precipitation during the coldest quarter 1.31117 Precipitation during the wettest quarter 1.41975 Temperature during the coldest quarter 1.48412 Compound topographic index (relative wetness) 1.50381 Ratio of precipitation to potential evapotranspiration 2.02912 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 3.14642 Day/night diurnal temperature difference 3.41435 Sum of monthly Tavg where Tavg >=5 deg C 3.79956 Temperature during the hottest quarter 4.68913 Available water holding capacity of soil 5.39468 Bulk density of soil 6.38939 Solar interception 9.59312