Available water holding capacity of soil 0.108771 Solar interception 0.129994 Precipitation during the wettest quarter 0.138936 Precipitation during the hottest quarter 0.148066 Sum of monthly Tavg where Tavg >=5 deg C 0.163738 Nitrogen content of soil 0.176127 Precipitation during the coldest quarter 0.198491 Ratio of precipitation to potential evapotranspiration 0.220575 Precipitation during the driest quarter 0.408981 Elevation 0.42069 Compound topographic index (relative wetness) 0.533897 Temperature during the hottest quarter 0.775784 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.987499 Carbon content of soil 1.3598 Temperature during the coldest quarter 1.43193 Bulk density of soil 1.75533 Day/night diurnal temperature difference 2.10848