Precipitation during the hottest quarter 0.644271 Nitrogen content of soil 0.769991 Available water holding capacity of soil 0.906153 Precipitation during the driest quarter 0.922968 Precipitation during the coldest quarter 0.973885 Solar interception 1.25172 Compound topographic index (relative wetness) 1.26501 Sum of monthly Tavg where Tavg >=5 deg C 1.44417 Precipitation during the wettest quarter 1.55209 Ratio of precipitation to potential evapotranspiration 1.67526 Elevation 2.33874 Temperature during the hottest quarter 2.50475 Temperature during the coldest quarter 3.1983 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 3.53431 Carbon content of soil 5.01823 Bulk density of soil 5.5396 Day/night diurnal temperature difference 5.5935