Carbon content of soil 0.550159
Sum of monthly Tavg where Tavg >=5 deg C 0.59638
Nitrogen content of soil 0.607212
Solar interception 0.621443
Day/night diurnal temperature difference 0.691974
Precipitation during the wettest quarter 0.781964
Precipitation during the driest quarter 0.783503
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.16253
Precipitation during the coldest quarter 1.28374
Precipitation during the hottest quarter 1.30448
Bulk density of soil 1.38633
Ratio of precipitation to potential evapotranspiration 1.52718
Compound topographic index (relative wetness) 1.84926
Available water holding capacity of soil 2.29265
Temperature during the hottest quarter 2.3255
Temperature during the coldest quarter 4.3633