Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.948288 Nitrogen content of soil 1.07965 Precipitation during the driest quarter 1.10679 Compound topographic index (relative wetness) 1.26983 Elevation 1.33028 Precipitation during the wettest quarter 1.40697 Temperature during the hottest quarter 1.45573 Available water holding capacity of soil 1.58121 Ratio of precipitation to potential evapotranspiration 1.85635 Bulk density of soil 1.95712 Carbon content of soil 1.99342 Solar interception 2.55181 Sum of monthly Tavg where Tavg >=5 deg C 2.57894 Precipitation during the hottest quarter 3.66375 Precipitation during the coldest quarter 3.92858 Temperature during the coldest quarter 4.19012 Day/night diurnal temperature difference 7.64023