Zonneschijn — 2023
| Month | Ferrières | Manhay | Difference |
|---|---|---|---|
| Jan | 87.7 uren | – | – |
| Feb | 153.7 uren | – | – |
| Mar | 164.8 uren | 123.3 uren | +41.5 |
| Apr | 232.3 uren | 237.7 uren | -5.4 |
| May | 340.9 uren | 342.1 uren | -1.2 |
| Jun | 406.6 uren | 407.5 uren | -0.9 |
| Jul | 335.4 uren | 329.8 uren | +5.6 |
| Aug |
| 295.6 uren |
| 299.1 uren |
| -3.5 |
| Sep | 300.8 uren | 300.1 uren | +0.7 |
| Oct | 191.8 uren | 193.4 uren | -1.6 |
| Nov | 92.6 uren | 80.1 uren | +12.5 |
| Dec | 75.4 uren | 72.6 uren | +2.8 |