Zonneschijn — 2009
| Month | Châtelet | Aiseau-Presles | Difference |
|---|---|---|---|
| Jan | 139.2 uren | – | – |
| Feb | 89.8 uren | – | – |
| Mar | 229.6 uren | – | – |
| Apr | 299.8 uren | – | – |
| May | 313 uren | – | – |
| Jun | 356.6 uren | – | – |
| Jul | 386.7 uren | – | – |
| Aug | 374 uren | – | – |
| Sep |
| 247.6 uren |
| – |
| – |
| Oct | 192.8 uren | – | – |
| Nov | 119.9 uren | – | – |
| Dec | 85.1 uren | – | – |