Precipitation during the wettest quarter 0 Nitrogen content of soil 0.558818 Carbon content of soil 0.682152 Precipitation during the hottest quarter 0.754007 Bulk density of soil 0.811811 Precipitation during the driest quarter 0.822052 Precipitation during the coldest quarter 0.975568 Available water holding capacity of soil 1.00876 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.0132 Temperature during the hottest quarter 1.08138 Ratio of precipitation to potential evapotranspiration 1.0821 Compound topographic index (relative wetness) 1.14156 Temperature during the coldest quarter 1.38454 Sum of monthly Tavg where Tavg >=5 deg C 1.54483 Day/night diurnal temperature difference 2.14031 Solar interception 4.14529