Nitrogen content of soil 1.04378
Precipitation during the hottest quarter 1.06038
Precipitation during the coldest quarter 1.10959
Compound topographic index (relative wetness) 1.1757
Precipitation during the driest quarter 1.24362
Sum of monthly Tavg where Tavg >=5 deg C 1.31056
Available water holding capacity of soil 1.48311
Solar interception 1.6159
Precipitation during the wettest quarter 1.91455
Ratio of precipitation to potential evapotranspiration 2.21609
Elevation 3.11397
Temperature during the coldest quarter 3.26774
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 3.6978
Temperature during the hottest quarter 3.87571
Carbon content of soil 4.83667
Bulk density of soil 6.06805
Day/night diurnal temperature difference 6.92531