Sum of monthly Tavg where Tavg >=5 deg C 0.42913
Precipitation during the hottest quarter 0.507179
Precipitation during the coldest quarter 0.520191
Ratio of precipitation to potential evapotranspiration 0.588013
Precipitation during the driest quarter 0.615376
Temperature during the coldest quarter 0.645756
Temperature during the hottest quarter 0.660666
Carbon content of soil 0.665831
Available water holding capacity of soil 0.714314
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.796324
Compound topographic index (relative wetness) 0.829231
Precipitation during the wettest quarter 0.864983
Nitrogen content of soil 1.29939
Bulk density of soil 1.88179
Day/night diurnal temperature difference 1.88527
Solar interception 5.59771