Sum of monthly Tavg where Tavg >=5 deg C 0.289622
Precipitation during the hottest quarter 0.290424
Precipitation during the driest quarter 0.375199
Nitrogen content of soil 0.438908
Solar interception 0.446832
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.449123
Carbon content of soil 0.46399
Precipitation during the wettest quarter 0.502665
Precipitation during the coldest quarter 0.537823
Day/night diurnal temperature difference 0.681072
Bulk density of soil 0.717527
Ratio of precipitation to potential evapotranspiration 0.753841
Compound topographic index (relative wetness) 1.0748
Available water holding capacity of soil 1.23423
Temperature during the hottest quarter 1.79466
Temperature during the coldest quarter 2.68809