Zonneschijn — 2011
| Month | Ferrières | Manhay | Difference |
|---|---|---|---|
| Jan | 98 uren | – | – |
| Feb | 121.6 uren | – | – |
| Mar | 264.9 uren | – | – |
| Apr | 326.1 uren | – | – |
| May | 389.8 uren | – | – |
| Jun | 318 uren | – | – |
| Jul | 319.6 uren | – | – |
| Aug | 295.6 uren | – | – |
| Sep |
| 246.1 uren |
| – |
| – |
| Oct | 210.8 uren | – | – |
| Nov | 156.3 uren | – | – |
| Dec | 88.7 uren | – | – |