Zonneschijn — 1999
| Month | Villers-la-Ville | Court-Saint-Étienne | Difference |
|---|---|---|---|
| Jan | 110.2 uren | 112.7 uren | -2.5 |
| Feb | 154.4 uren | 148.6 uren | +5.8 |
| Mar | 220.8 uren | 221.8 uren | -1.0 |
| Apr | 278.2 uren | 283.2 uren | -5.0 |
| May | 343.2 uren | 352.7 uren | -9.5 |
| Jun | 370.4 uren | 370.7 uren | -0.3 |
| Jul | 357.7 uren | 357.2 uren |
| Aug | 325.1 uren | 328.3 uren | -3.2 |
| Sep | 262.9 uren | 259.2 uren | +3.7 |
| Oct | 223.6 uren | 211.9 uren | +11.7 |
| Nov | 145.2 uren | 142.6 uren | +2.6 |
| Dec | 92.8 uren | 98.4 uren | -5.6 |