Carbon content of soil 0.695877 Sum of monthly Tavg where Tavg >=5 deg C 0.822097 Nitrogen content of soil 0.833155 Precipitation during the driest quarter 1.01233 Day/night diurnal temperature difference 1.04758 Precipitation during the wettest quarter 1.155 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.4783 Ratio of precipitation to potential evapotranspiration 1.50825 Available water holding capacity of soil 1.74522 Compound topographic index (relative wetness) 1.76738 Bulk density of soil 1.841 Temperature during the hottest quarter 2.16362 Precipitation during the hottest quarter 3.26449 Precipitation during the coldest quarter 3.90336 Temperature during the coldest quarter 4.14238 Solar interception 6.68727