Precipitation during the hottest quarter 0.645087 Carbon content of soil 0.82017 Available water holding capacity of soil 0.880769 Precipitation during the coldest quarter 0.927423 Temperature during the coldest quarter 1.00122 Temperature during the hottest quarter 1.02162 Precipitation during the wettest quarter 1.26464 Compound topographic index (relative wetness) 1.48282 Ratio of precipitation to potential evapotranspiration 1.48298 Precipitation during the driest quarter 1.6419 Nitrogen content of soil 1.79378 Sum of monthly Tavg where Tavg >=5 deg C 1.79473 Day/night diurnal temperature difference 1.86012 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 2.00407 Bulk density of soil 2.32393 Solar interception 7.86205