Precipitation during the wettest quarter 0 Solar interception 0.040494 Nitrogen content of soil 0.303583 Precipitation during the driest quarter 0.417647 Carbon content of soil 0.542723 Available water holding capacity of soil 0.788318 Bulk density of soil 0.828741 Precipitation during the hottest quarter 0.880872 Precipitation during the coldest quarter 1.18906 Sum of monthly Tavg where Tavg >=5 deg C 1.36703 Temperature during the hottest quarter 1.38133 Compound topographic index (relative wetness) 1.41754 Day/night diurnal temperature difference 1.45978 Ratio of precipitation to potential evapotranspiration 1.73538 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 2.28929 Temperature during the coldest quarter 2.76577