Precipitation during the driest quarter 0.449735
Sum of monthly Tavg where Tavg >=5 deg C 0.487105
Nitrogen content of soil 0.55263
Precipitation during the wettest quarter 0.701931
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.768325
Carbon content of soil 0.817914
Day/night diurnal temperature difference 1.11546
Solar interception 1.2243
Bulk density of soil 1.56194
Available water holding capacity of soil 1.58851
Temperature during the hottest quarter 2.08251
Compound topographic index (relative wetness) 2.59665
Ratio of precipitation to potential evapotranspiration 3.49704
Precipitation during the coldest quarter 3.9966
Temperature during the coldest quarter 4.07962
Precipitation during the hottest quarter 5.16621