Zonneschijn — 1998
| Month | Ferrières | Hamoir | Difference |
|---|---|---|---|
| Jan | 114.5 uren | – | – |
| Feb | 166.8 uren | – | – |
| Mar | 178.9 uren | – | – |
| Apr | 200.6 uren | – | – |
| May | 311.4 uren | – | – |
| Jun | 306.6 uren | – | – |
| Jul | 271 uren | – | – |
| Aug | 317 uren | – | – |
| Sep |
| 182.5 uren |
| – |
| – |
| Oct | 99.7 uren | – | – |
| Nov | 131.7 uren | – | – |
| Dec | 96.2 uren | – | – |