Solar interception 0.470809 Carbon content of soil 0.598127 Nitrogen content of soil 0.614973 Precipitation during the wettest quarter 0.738032 Precipitation during the driest quarter 0.810207 Sum of monthly Tavg where Tavg >=5 deg C 0.816487 Bulk density of soil 1.04785 Day/night diurnal temperature difference 1.20002 Temperature during the hottest quarter 1.22209 Available water holding capacity of soil 1.34908 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.89442 Compound topographic index (relative wetness) 2.85177 Precipitation during the coldest quarter 3.68645 Temperature during the coldest quarter 3.9354 Precipitation during the hottest quarter 3.99254 Ratio of precipitation to potential evapotranspiration 4.3562