Carbon content of soil 0.998595 Precipitation during the hottest quarter 1.1898 Precipitation during the coldest quarter 1.22097 Precipitation during the driest quarter 1.23861 Temperature during the hottest quarter 1.39519 Nitrogen content of soil 1.47984 Temperature during the coldest quarter 1.67487 Compound topographic index (relative wetness) 1.71483 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.72498 Precipitation during the wettest quarter 1.98816 Ratio of precipitation to potential evapotranspiration 1.99101 Sum of monthly Tavg where Tavg >=5 deg C 2.55674 Day/night diurnal temperature difference 2.85219 Bulk density of soil 3.41868 Available water holding capacity of soil 4.23625 Solar interception 10.1034