Day/night diurnal temperature difference 0.521168 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.959888 Temperature during the hottest quarter 0.962302 Compound topographic index (relative wetness) 1.04888 Nitrogen content of soil 1.21412 Precipitation during the wettest quarter 1.32409 Precipitation during the driest quarter 1.42059 Carbon content of soil 1.53778 Elevation 1.73804 Available water holding capacity of soil 2.00597 Bulk density of soil 2.4323 Solar interception 2.78566 Sum of monthly Tavg where Tavg >=5 deg C 2.81016 Precipitation during the coldest quarter 3.67649 Precipitation during the hottest quarter 3.9845 Ratio of precipitation to potential evapotranspiration 4.32961 Temperature during the coldest quarter 5.55612