Precipitation during the hottest quarter 0.714244 Precipitation during the coldest quarter 0.719731 Precipitation during the driest quarter 0.818114 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.854702 Nitrogen content of soil 0.859117 Compound topographic index (relative wetness) 0.93699 Temperature during the hottest quarter 1.15775 Available water holding capacity of soil 1.2298 Elevation 1.24327 Precipitation during the wettest quarter 1.2533 Ratio of precipitation to potential evapotranspiration 1.54537 Carbon content of soil 1.88957 Solar interception 1.92878 Bulk density of soil 1.97091 Sum of monthly Tavg where Tavg >=5 deg C 2.53608 Temperature during the coldest quarter 3.08914 Day/night diurnal temperature difference 5.47854