Sum of monthly Tavg where Tavg >=5 deg C 0.738734
Nitrogen content of soil 0.984778
Precipitation during the hottest quarter 1.00101
Carbon content of soil 1.04657
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.10908
Precipitation during the driest quarter 1.20184
Precipitation during the wettest quarter 1.34052
Precipitation during the coldest quarter 1.39268
Day/night diurnal temperature difference 1.4149
Bulk density of soil 1.43437
Ratio of precipitation to potential evapotranspiration 1.53041
Compound topographic index (relative wetness) 1.86048
Available water holding capacity of soil 2.41304
Temperature during the hottest quarter 2.62567
Solar interception 2.92821
Temperature during the coldest quarter 5.19172