Precipitation during the wettest quarter 0.093819 Temperature during the hottest quarter 0.368909 Ratio of precipitation to potential evapotranspiration 0.403121 Available water holding capacity of soil 0.452164 Compound topographic index (relative wetness) 0.530792 Bulk density of soil 0.748202 Precipitation during the coldest quarter 0.886582 Nitrogen content of soil 0.89839 Carbon content of soil 0.983187 Sum of monthly Tavg where Tavg >=5 deg C 1.00528 Precipitation during the driest quarter 1.03074 Precipitation during the hottest quarter 1.23472 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.67501 Day/night diurnal temperature difference 2.0098 Temperature during the coldest quarter 2.51874 Solar interception 6.29766