Precipitation during the wettest quarter 0 Solar interception 0.035866 Precipitation during the driest quarter 0.17366 Nitrogen content of soil 0.223524 Carbon content of soil 0.32244 Available water holding capacity of soil 0.438488 Precipitation during the hottest quarter 0.474955 Bulk density of soil 0.554701 Sum of monthly Tavg where Tavg >=5 deg C 0.88309 Temperature during the hottest quarter 0.993159 Precipitation during the coldest quarter 1.02134 Compound topographic index (relative wetness) 1.41754 Day/night diurnal temperature difference 1.64984 Ratio of precipitation to potential evapotranspiration 1.73538 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.85256 Temperature during the coldest quarter 2.25052