Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.06788 Precipitation during the wettest quarter 0.079285 Precipitation during the coldest quarter 0.083034 Temperature during the hottest quarter 0.094539 Carbon content of soil 0.095172 Precipitation during the hottest quarter 0.135971 Ratio of precipitation to potential evapotranspiration 0.175932 Compound topographic index (relative wetness) 0.238163 Sum of monthly Tavg where Tavg >=5 deg C 0.270789 Bulk density of soil 0.419955 Precipitation during the driest quarter 0.431264 Available water holding capacity of soil 0.578955 Nitrogen content of soil 0.918814 Temperature during the coldest quarter 0.971796 Day/night diurnal temperature difference 1.16134 Solar interception 4.88412