Precipitation during the driest quarter 0.52038 Precipitation during the hottest quarter 0.9561 Nitrogen content of soil 1.17637 Precipitation during the wettest quarter 1.28939 Precipitation during the coldest quarter 1.38861 Compound topographic index (relative wetness) 1.43285 Solar interception 1.58171 Temperature during the coldest quarter 1.61253 Ratio of precipitation to potential evapotranspiration 2.09523 Available water holding capacity of soil 3.15825 Elevation 3.44515 Temperature during the hottest quarter 3.67742 Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 3.73287 Sum of monthly Tavg where Tavg >=5 deg C 4.74476 Bulk density of soil 5.59319 Carbon content of soil 6.37436 Day/night diurnal temperature difference 9.97454