Precipitation during the hottest quarter 0.354853 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.367052 Precipitation during the coldest quarter 0.441384 Sum of monthly Tavg where Tavg >=5 deg C 0.527683 Available water holding capacity of soil 0.614418 Ratio of precipitation to potential evapotranspiration 0.642464 Carbon content of soil 0.73694 Bulk density of soil 0.73719 Nitrogen content of soil 0.900786 Solar interception 0.925887 Precipitation during the wettest quarter 1.39413 Compound topographic index (relative wetness) 1.47297 Precipitation during the driest quarter 1.51287 Elevation 1.66878 Temperature during the coldest quarter 1.72572 Temperature during the hottest quarter 2.55215 Day/night diurnal temperature difference 5.01652