Precipitation during the driest quarter 0.606647
Sum of monthly Tavg where Tavg >=5 deg C 0.702213
Available water holding capacity of soil 0.865116
Precipitation during the wettest quarter 0.959852
Nitrogen content of soil 1.07708
Temperature during the hottest quarter 1.20485
Precipitation during the hottest quarter 1.24161
Precipitation during the coldest quarter 1.31844
Carbon content of soil 1.45368
Bulk density of soil 1.50521
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.52764
Ratio of precipitation to potential evapotranspiration 1.87678
Day/night diurnal temperature difference 2.50316
Compound topographic index (relative wetness) 2.52564
Solar interception 3.61581
Temperature during the coldest quarter 4.84713