Precipitation during the wettest quarter 0.006153 Precipitation during the hottest quarter 0.453362 Precipitation during the coldest quarter 0.85316 Nitrogen content of soil 0.904989 Bulk density of soil 0.909699 Compound topographic index (relative wetness) 0.920831 Sum of monthly Tavg where Tavg >=5 deg C 0.924387 Carbon content of soil 0.97841 Precipitation during the driest quarter 1.09967 Available water holding capacity of soil 1.52389 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.53513 Solar interception 1.54354 Ratio of precipitation to potential evapotranspiration 1.82532 Temperature during the coldest quarter 2.07008 Elevation 2.62122 Temperature during the hottest quarter 2.7618 Day/night diurnal temperature difference 6.92384