Zonneschijn — 1997
| Month | Charleroi | Châtelet | Difference |
|---|---|---|---|
| Jan | – | 144.9 uren | – |
| Feb | – | 125.3 uren | – |
| Mar | – | 216.5 uren | – |
| Apr | – | 284.3 uren | – |
| May | – | 336.4 uren | – |
| Jun | – | 309 uren | – |
| Jul | – | 341.9 uren | – |
| Aug | – | 342.4 uren | – |
| Sep |
| – |
| 290.2 uren |
| – |
| Oct | – | 206.3 uren | – |
| Nov | – | 109.5 uren | – |
| Dec | – | 69.4 uren | – |