Precipitation during the driest quarter 0.376591 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.388218 Precipitation during the wettest quarter 0.484948 Temperature during the hottest quarter 0.500693 Compound topographic index (relative wetness) 0.552065 Carbon content of soil 0.624879 Nitrogen content of soil 0.718457 Day/night diurnal temperature difference 0.753475 Available water holding capacity of soil 0.781903 Bulk density of soil 0.818919 Elevation 0.823553 Sum of monthly Tavg where Tavg >=5 deg C 1.2529 Solar interception 1.87523 Precipitation during the coldest quarter 2.42219 Precipitation during the hottest quarter 2.55554 Ratio of precipitation to potential evapotranspiration 2.8382 Temperature during the coldest quarter 3.87958