Precipitation during the hottest quarter 0.197326
Carbon content of soil 0.272156
Sum of monthly Tavg where Tavg >=5 deg C 0.404278
Precipitation during the coldest quarter 0.42753
Precipitation during the driest quarter 0.458596
Nitrogen content of soil 0.460427
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.602611
Day/night diurnal temperature difference 0.618762
Precipitation during the wettest quarter 0.646918
Ratio of precipitation to potential evapotranspiration 0.697319
Available water holding capacity of soil 0.788318
Bulk density of soil 0.93452
Temperature during the hottest quarter 0.9543
Compound topographic index (relative wetness) 1.45545
Temperature during the coldest quarter 2.58648
Solar interception 2.64723