Precipitation during the hottest quarter 0.244759 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.374852 Carbon content of soil 0.455505 Temperature during the hottest quarter 0.490668 Precipitation during the coldest quarter 0.595651 Precipitation during the wettest quarter 0.816365 Precipitation during the driest quarter 0.849261 Nitrogen content of soil 0.919935 Compound topographic index (relative wetness) 0.976786 Ratio of precipitation to potential evapotranspiration 1.10444 Day/night diurnal temperature difference 2.05087 Sum of monthly Tavg where Tavg >=5 deg C 2.10538 Bulk density of soil 2.17869 Temperature during the coldest quarter 3.01601 Available water holding capacity of soil 3.25368 Solar interception 5.01467