Zonneschijn — 2004
| Month | Ferrières | Hamoir | Difference |
|---|---|---|---|
| Jan | 85.9 uren | – | – |
| Feb | 155.1 uren | – | – |
| Mar | 231.6 uren | – | – |
| Apr | 282.9 uren | – | – |
| May | 340.9 uren | – | – |
| Jun | 335.5 uren | – | – |
| Jul | 336.6 uren | – | – |
| Aug | 303.1 uren | – | – |
| Sep |
| 262.6 uren |
| – |
| – |
| Oct | 203.2 uren | – | – |
| Nov | 125.1 uren | – | – |
| Dec | 119.8 uren | – | – |