Precipitation during the coldest quarter 0.503217 Precipitation during the hottest quarter 0.551655 Available water holding capacity of soil 0.716367 Ratio of precipitation to potential evapotranspiration 0.731211 Temperature during the hottest quarter 0.736137 Carbon content of soil 1.00698 Nitrogen content of soil 1.06387 Compound topographic index (relative wetness) 1.08468 Bulk density of soil 1.1589 Precipitation during the driest quarter 1.28191 Precipitation during the wettest quarter 1.36859 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.5315 Sum of monthly Tavg where Tavg >=5 deg C 1.733 Temperature during the coldest quarter 1.78047 Day/night diurnal temperature difference 2.48204 Solar interception 6.96795