Precipitation during the driest quarter 0.833825 Compound topographic index (relative wetness) 0.944835 Nitrogen content of soil 0.952165 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.05334 Precipitation during the wettest quarter 1.33591 Elevation 1.41602 Temperature during the hottest quarter 1.48766 Available water holding capacity of soil 1.64931 Carbon content of soil 2.17302 Solar interception 2.55181 Bulk density of soil 2.60253 Ratio of precipitation to potential evapotranspiration 3.49704 Sum of monthly Tavg where Tavg >=5 deg C 3.61609 Temperature during the coldest quarter 3.62958 Precipitation during the coldest quarter 3.99518 Precipitation during the hottest quarter 5.10059 Day/night diurnal temperature difference 5.47854