Precipitation during the hottest quarter 0.449289 Ratio of precipitation to potential evapotranspiration 0.837365 Day/night diurnal temperature difference 0.919625 Precipitation during the coldest quarter 0.938388 Sum of monthly Tavg where Tavg >=5 deg C 0.941765 Carbon content of soil 0.981343 Nitrogen content of soil 1.00558 Precipitation during the driest quarter 1.11987 Precipitation during the wettest quarter 1.37626 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.43493 Bulk density of soil 1.7833 Compound topographic index (relative wetness) 1.82197 Available water holding capacity of soil 2.04625 Temperature during the hottest quarter 2.78233 Temperature during the coldest quarter 3.22172 Solar interception 4.60288