Precipitation during the coldest quarter 0.789257
Sum of monthly Tavg where Tavg >=5 deg C 0.801114
Carbon content of soil 0.834905
Ratio of precipitation to potential evapotranspiration 0.936596
Temperature during the hottest quarter 1.08827
Available water holding capacity of soil 1.18199
Precipitation during the driest quarter 1.28912
Compound topographic index (relative wetness) 1.30138
Nitrogen content of soil 1.30165
Precipitation during the hottest quarter 1.49473
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.54146
Precipitation during the wettest quarter 1.89519
Bulk density of soil 2.04149
Temperature during the coldest quarter 2.29863
Day/night diurnal temperature difference 2.58839
Solar interception 9.80915