Precipitation during the hottest quarter 0.833678 Precipitation during the driest quarter 0.878955 Compound topographic index (relative wetness) 1.066 Precipitation during the coldest quarter 1.16403 Nitrogen content of soil 1.36767 Solar interception 1.58902 Sum of monthly Tavg where Tavg >=5 deg C 1.74968 Precipitation during the wettest quarter 1.81363 Available water holding capacity of soil 1.86089 Ratio of precipitation to potential evapotranspiration 1.89801 Temperature during the coldest quarter 1.95243 Elevation 2.25991 Temperature during the hottest quarter 3.81115 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 4.06794 Carbon content of soil 5.28741 Bulk density of soil 7.44565 Day/night diurnal temperature difference 7.82147