Zonneschijn — 2023
| Month | Plombières | Vaals | Difference |
|---|---|---|---|
| Jan | – | – | – |
| Feb | – | – | – |
| Mar | 138.5 uren | 0 uren | +138.5 |
| Apr | 226.5 uren | 231.6 uren | -5.1 |
| May | 346.7 uren | 354.9 uren | -8.2 |
| Jun | 389.2 uren | 391.4 uren | -2.2 |
| Jul | 336.6 uren | 342.2 uren | -5.6 |
| Aug |
| 304.2 uren |
| 310.9 uren |
| -6.7 |
| Sep | 292.2 uren | 292.2 uren | +0.0 |
| Oct | 204.6 uren | 205.9 uren | -1.3 |
| Nov | 98.7 uren | 111.1 uren | -12.4 |
| Dec | 74.2 uren | 73.3 uren | +0.9 |