Zonneschijn — 1999
| Month | Hulst | Sint-Gillis-Waas | Difference |
|---|---|---|---|
| Jan | – | 119.9 uren | – |
| Feb | – | 159.1 uren | – |
| Mar | – | 228.6 uren | – |
| Apr | – | 293 uren | – |
| May | – | 375.8 uren | – |
| Jun | – | 379.5 uren | – |
| Jul | – | 385.8 uren | – |
| Aug | – | 338.2 uren | – |
| Sep |
| – |
| 252.8 uren |
| – |
| Oct | – | 209 uren | – |
| Nov | – | 140.9 uren | – |
| Dec | – | 108 uren | – |