Precipitation during the driest quarter 0.623994 Carbon content of soil 0.628721 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.633507 Precipitation during the coldest quarter 0.68339 Temperature during the hottest quarter 0.691669 Precipitation during the hottest quarter 0.755283 Precipitation during the wettest quarter 0.988316 Ratio of precipitation to potential evapotranspiration 1.01653 Compound topographic index (relative wetness) 1.20923 Nitrogen content of soil 1.30555 Sum of monthly Tavg where Tavg >=5 deg C 1.89914 Day/night diurnal temperature difference 1.90995 Bulk density of soil 2.41513 Temperature during the coldest quarter 3.10136 Available water holding capacity of soil 3.327 Solar interception 8.25839