Zonneschijn — 2009
| Month | Érezée | Ferrières | Difference |
|---|---|---|---|
| Jan | – | 140.8 uren | – |
| Feb | – | 93.6 uren | – |
| Mar | – | 207.7 uren | – |
| Apr | – | 292.1 uren | – |
| May | – | 306.5 uren | – |
| Jun | – | 350.4 uren | – |
| Jul | – | 373.7 uren | – |
| Aug | – | 363.3 uren | – |
| Sep |
| – |
| 226 uren |
| – |
| Oct | – | 180 uren | – |
| Nov | – | 88.9 uren | – |
| Dec | – | 68.6 uren | – |