Zonneschijn — 2001
| Month | Ferrières | Manhay | Difference |
|---|---|---|---|
| Jan | 119.6 uren | – | – |
| Feb | 146 uren | – | – |
| Mar | 138.8 uren | – | – |
| Apr | 248.8 uren | – | – |
| May | 355.9 uren | – | – |
| Jun | 321.4 uren | – | – |
| Jul | 333.1 uren | – | – |
| Aug | 339.8 uren | – | – |
| Sep |
| 184.2 uren |
| – |
| – |
| Oct | 194.2 uren | – | – |
| Nov | 133.2 uren | – | – |
| Dec | 100.4 uren | – | – |