Precipitation during the driest quarter 0.687889 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.768204 Temperature during the hottest quarter 1.09169 Available water holding capacity of soil 1.10628 Precipitation during the wettest quarter 1.12211 Compound topographic index (relative wetness) 1.21454 Nitrogen content of soil 1.28742 Carbon content of soil 1.75208 Bulk density of soil 1.81756 Elevation 1.91046 Sum of monthly Tavg where Tavg >=5 deg C 2.33818 Temperature during the coldest quarter 3.53497 Precipitation during the coldest quarter 4.08236 Precipitation during the hottest quarter 5.10523 Ratio of precipitation to potential evapotranspiration 5.35755 Solar interception 5.64429 Day/night diurnal temperature difference 6.29027