Wet degree days (sum of growing degree days when soil is wet) in the top soil layers: 1915-2011
Values are normalized for each site. Colors depict site-specific quantiles:
- 95-100% (1 in 20 years high WDD) - DARK GREEN
- 5-10% (1 in 10 years)
- 80-90% (1 in 5 years)
- 60-80% (slightly wet)
- 40-60% (normal) - WHITE
- 20-40% (slightly dry)
- 10-20% (1 in 5 years)
- 5-10% (1 in 10 years)
- 0-5% (1 in 20 years low WDD) - DARK BROWN