Precipitation during the hottest quarter 0.369094
Nitrogen content of soil 0.447404
Ratio of precipitation to potential evapotranspiration 0.457335
Available water holding capacity of soil 0.462533
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.495856
Sum of monthly Tavg where Tavg >=5 deg C 0.61613
Compound topographic index (relative wetness) 0.639639
Precipitation during the coldest quarter 0.711213
Precipitation during the driest quarter 0.753721
Carbon content of soil 0.76466
Elevation 0.77742
Precipitation during the wettest quarter 0.783399
Temperature during the hottest quarter 0.785128
Solar interception 0.930093
Bulk density of soil 1.21258
Day/night diurnal temperature difference 1.58971
Temperature during the coldest quarter 2.61796