Precipitation during the hottest quarter 0.468594
Sum of monthly Tavg where Tavg >=5 deg C 0.582201
Nitrogen content of soil 0.64239
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 0.651068
Precipitation during the driest quarter 0.727095
Carbon content of soil 0.792483
Precipitation during the coldest quarter 0.814855
Bulk density of soil 0.913813
Day/night diurnal temperature difference 0.933822
Ratio of precipitation to potential evapotranspiration 0.942885
Precipitation during the wettest quarter 1.10315
Compound topographic index (relative wetness) 1.71565
Solar interception 1.95576
Available water holding capacity of soil 1.96947
Temperature during the hottest quarter 2.26618
Temperature during the coldest quarter 3.28788