Precipitation during the wettest quarter 0.04213 Temperature during the hottest quarter 0.208363 Available water holding capacity of soil 0.430194 Precipitation during the hottest quarter 0.78552 Carbon content of soil 0.829863 Precipitation during the driest quarter 0.933993 Nitrogen content of soil 1.17449 Precipitation during the coldest quarter 1.35 Bulk density of soil 1.36981 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.57975 Compound topographic index (relative wetness) 1.93967 Ratio of precipitation to potential evapotranspiration 2.14799 Day/night diurnal temperature difference 2.32119 Sum of monthly Tavg where Tavg >=5 deg C 2.42448 Temperature during the coldest quarter 2.73161 Solar interception 4.24929