Solar interception 0.180344 Nitrogen content of soil 0.828015 Precipitation during the wettest quarter 0.899959 Carbon content of soil 1.04592 Day/night diurnal temperature difference 1.08646 Sum of monthly Tavg where Tavg >=5 deg C 1.11549 Precipitation during the driest quarter 1.23938 Bulk density of soil 1.24515 Available water holding capacity of soil 1.92027 Temperature during the hottest quarter 1.96634 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 2.2556 Compound topographic index (relative wetness) 3.49793 Precipitation during the coldest quarter 4.0095 Ratio of precipitation to potential evapotranspiration 4.9537 Temperature during the coldest quarter 5.18551 Precipitation during the hottest quarter 6.61816