Carbon content of soil 0.989342 Precipitation during the driest quarter 1.14985 Precipitation during the coldest quarter 1.38527 Precipitation during the hottest quarter 1.58053 Nitrogen content of soil 1.62247 Compound topographic index (relative wetness) 1.98139 Precipitation during the wettest quarter 2.03955 Ratio of precipitation to potential evapotranspiration 2.22555 Temperature during the coldest quarter 2.85805 Day/night diurnal temperature difference 3.10875 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 3.62265 Sum of monthly Tavg where Tavg >=5 deg C 4.19097 Temperature during the hottest quarter 4.8059 Available water holding capacity of soil 6.89212 Bulk density of soil 7.2027 Solar interception 7.92179