Carbon content of soil 0.469346 Precipitation during the hottest quarter 0.469533 Precipitation during the driest quarter 0.656414 Nitrogen content of soil 0.783549 Precipitation during the coldest quarter 0.833823 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.964572 Compound topographic index (relative wetness) 1.12272 Temperature during the hottest quarter 1.33506 Ratio of precipitation to potential evapotranspiration 1.39162 Precipitation during the wettest quarter 1.46468 Day/night diurnal temperature difference 1.52366 Temperature during the coldest quarter 2.01237 Sum of monthly Tavg where Tavg >=5 deg C 3.59988 Bulk density of soil 4.81699 Available water holding capacity of soil 5.59967 Solar interception 9.8405