Carbon content of soil 0.726247
Precipitation during the wettest quarter 0.834599
Sum of monthly Tavg where Tavg >=5 deg C 0.836708
Nitrogen content of soil 0.946596
Day/night diurnal temperature difference 0.965932
Precipitation during the driest quarter 1.0368
Temperature during the hottest quarter 1.65962
Bulk density of soil 1.69173
Available water holding capacity of soil 1.77917
Ratio of precipitation to potential evapotranspiration 2.15952
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 2.18198
Compound topographic index (relative wetness) 2.58024
Solar interception 2.92821
Precipitation during the hottest quarter 3.51924
Precipitation during the coldest quarter 4.0095
Temperature during the coldest quarter 4.61245