Nitrogen content of soil 0.594103
Compound topographic index (relative wetness) 0.602563
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.62284
Temperature during the hottest quarter 0.658171
Available water holding capacity of soil 0.753249
Precipitation during the driest quarter 0.785625
Elevation 0.899512
Precipitation during the wettest quarter 1.11403
Carbon content of soil 1.17772
Ratio of precipitation to potential evapotranspiration 1.39266
Day/night diurnal temperature difference 1.76764
Solar interception 1.98756
Bulk density of soil 2.15704
Sum of monthly Tavg where Tavg >=5 deg C 2.3224
Precipitation during the hottest quarter 3.8522
Precipitation during the coldest quarter 3.97316
Temperature during the coldest quarter 5.00718