Precipitation during the wettest quarter 0.035318
Ratio of precipitation to potential evapotranspiration 0.087437
Compound topographic index (relative wetness) 0.09043
Precipitation during the hottest quarter 0.143848
Precipitation during the coldest quarter 0.191284
Temperature during the hottest quarter 0.275329
Carbon content of soil 0.354061
Available water holding capacity of soil 0.37861
Bulk density of soil 0.453359
Sum of monthly Tavg where Tavg >=5 deg C 0.539504
Precipitation during the driest quarter 0.593088
Nitrogen content of soil 0.660289
Day/night diurnal temperature difference 0.68018
Integer number of consecutive months where Tavg >= 5 deg C (Length of potential growing season) 1.12413
Solar interception 2.23012
Temperature during the coldest quarter 3.0496