Precipitation during the hottest quarter 0.155444 Carbon content of soil 0.324291 Precipitation during the coldest quarter 0.380299 Ratio of precipitation to potential evapotranspiration 0.519546 Precipitation during the driest quarter 0.522318 Nitrogen content of soil 0.627674 Precipitation during the wettest quarter 0.674975 Day/night diurnal temperature difference 0.740549 Sum of monthly Tavg where Tavg >=5 deg C 0.764049 Compound topographic index (relative wetness) 1.1323 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.25338 Available water holding capacity of soil 1.54392 Bulk density of soil 1.55922 Temperature during the hottest quarter 2.0512 Temperature during the coldest quarter 2.14512 Solar interception 6.68727