Precipitation during the driest quarter 0.677065 Precipitation during the wettest quarter 1.08301 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.1753 Compound topographic index (relative wetness) 1.32486 Available water holding capacity of soil 1.50115 Nitrogen content of soil 1.68975 Bulk density of soil 1.96879 Sum of monthly Tavg where Tavg >=5 deg C 2.17148 Carbon content of soil 2.65286 Ratio of precipitation to potential evapotranspiration 2.70196 Solar interception 3.34938 Elevation 3.65583 Temperature during the hottest quarter 3.80371 Precipitation during the hottest quarter 3.88018 Precipitation during the coldest quarter 3.99518 Temperature during the coldest quarter 4.97386 Day/night diurnal temperature difference 5.48947