Precipitation during the driest quarter 0.64986 Nitrogen content of soil 0.699992 Precipitation during the wettest quarter 0.87278 Precipitation during the hottest quarter 0.97904 Sum of monthly Tavg where Tavg >=5 deg C 1.06288 Available water holding capacity of soil 1.09456 Compound topographic index (relative wetness) 1.3628 Precipitation during the coldest quarter 1.41253 Solar interception 1.60668 Ratio of precipitation to potential evapotranspiration 1.70918 Temperature during the hottest quarter 1.91917 Elevation 2.30816 Temperature during the coldest quarter 2.97392 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 3.31252 Carbon content of soil 5.12783 Bulk density of soil 5.60412 Day/night diurnal temperature difference 8.47234