Nitrogen content of soil 0.146265
Precipitation during the hottest quarter 0.18406
Precipitation during the wettest quarter 0.188155
Precipitation during the driest quarter 0.238612
Precipitation during the coldest quarter 0.273045
Available water holding capacity of soil 0.280722
Sum of monthly Tavg where Tavg >=5 deg C 0.470476
Ratio of precipitation to potential evapotranspiration 0.489044
Compound topographic index (relative wetness) 0.557028
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.655604
Solar interception 0.680437
Carbon content of soil 0.777191
Temperature during the hottest quarter 1.07864
Elevation 1.19699
Bulk density of soil 1.41081
Temperature during the coldest quarter 1.6816
Day/night diurnal temperature difference 2.91274