Day/night diurnal temperature difference 0.141415 Temperature during the hottest quarter 0.207134 Precipitation during the wettest quarter 0.238348 Compound topographic index (relative wetness) 0.443108 Nitrogen content of soil 0.755955 Carbon content of soil 0.825134 Precipitation during the driest quarter 0.877878 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.974454 Elevation 1.21403 Bulk density of soil 1.91744 Available water holding capacity of soil 2.0085 Sum of monthly Tavg where Tavg >=5 deg C 2.0182 Solar interception 2.8991 Temperature during the coldest quarter 3.4836 Precipitation during the coldest quarter 3.62459 Precipitation during the hottest quarter 3.81554 Ratio of precipitation to potential evapotranspiration 4.31768