Sum of monthly Tavg where Tavg >=5 deg C 0.694162
Nitrogen content of soil 0.780148
Carbon content of soil 0.872005
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.876801
Precipitation during the driest quarter 0.997076
Precipitation during the wettest quarter 1.29694
Day/night diurnal temperature difference 1.35256
Ratio of precipitation to potential evapotranspiration 1.39651
Bulk density of soil 1.64183
Compound topographic index (relative wetness) 2.20675
Available water holding capacity of soil 2.35649
Temperature during the hottest quarter 2.55449
Solar interception 2.92821
Precipitation during the hottest quarter 3.8587
Precipitation during the coldest quarter 3.98517
Temperature during the coldest quarter 5.19172