Sum of monthly Tavg where Tavg >=5 deg C 1.09654
Nitrogen content of soil 1.10679
Carbon content of soil 1.24771
Day/night diurnal temperature difference 1.33711
Precipitation during the wettest quarter 1.37626
Precipitation during the driest quarter 1.45027
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.95891
Ratio of precipitation to potential evapotranspiration 2.15925
Bulk density of soil 2.20574
Available water holding capacity of soil 2.23182
Compound topographic index (relative wetness) 2.57937
Temperature during the hottest quarter 3.21852
Precipitation during the coldest quarter 4.0095
Precipitation during the hottest quarter 4.08397
Temperature during the coldest quarter 5.71416
Solar interception 6.68727