Temperature during the hottest quarter 0.507322 Precipitation during the driest quarter 0.528912 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.529711 Precipitation during the wettest quarter 0.736251 Nitrogen content of soil 0.738301 Available water holding capacity of soil 0.741414 Compound topographic index (relative wetness) 0.808543 Elevation 1.3506 Bulk density of soil 1.68529 Carbon content of soil 1.70676 Sum of monthly Tavg where Tavg >=5 deg C 1.95094 Day/night diurnal temperature difference 3.02685 Temperature during the coldest quarter 3.35696 Precipitation during the coldest quarter 4.12764 Precipitation during the hottest quarter 5.10523 Ratio of precipitation to potential evapotranspiration 5.35303 Solar interception 5.64429