Precipitation during the driest quarter 0.499952 Nitrogen content of soil 0.750713 Precipitation during the wettest quarter 0.926827 Compound topographic index (relative wetness) 1.06304 Available water holding capacity of soil 1.15011 Precipitation during the hottest quarter 1.20152 Sum of monthly Tavg where Tavg >=5 deg C 1.34483 Solar interception 1.60668 Ratio of precipitation to potential evapotranspiration 1.64424 Precipitation during the coldest quarter 1.73918 Temperature during the coldest quarter 2.29926 Elevation 2.55194 Temperature during the hottest quarter 3.54101 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 3.55761 Bulk density of soil 5.72055 Carbon content of soil 6.59683 Day/night diurnal temperature difference 9.78232