Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.537374 Precipitation during the driest quarter 0.628035 Compound topographic index (relative wetness) 0.743911 Available water holding capacity of soil 0.861184 Nitrogen content of soil 0.904896 Elevation 1.01624 Precipitation during the wettest quarter 1.08097 Temperature during the hottest quarter 1.18445 Bulk density of soil 1.20916 Carbon content of soil 1.51853 Sum of monthly Tavg where Tavg >=5 deg C 1.75053 Ratio of precipitation to potential evapotranspiration 2.28573 Solar interception 2.55181 Precipitation during the hottest quarter 3.22823 Temperature during the coldest quarter 3.56941 Precipitation during the coldest quarter 3.84405 Day/night diurnal temperature difference 5.20312