| Monat 1999 | Strom (kWh) | Strahlung (kWh/m²/Monat) | Strahlung DWD (kWh/m²/Monat) |
|---|---|---|---|
| Januar | 23.9 | 11.6 | 19.84 |
| Februar | 34.6 | 28.7 | 35.03 |
| März | 82.3 | 59.8 | 60.14 |
| April | 132.1 | 105.4 | 107.70 |
| Mai | 165.1 | 141.0 | 146.01 |
| Juni | 157.0 | 141.1 | 137.10 |
| Juli | 174.9 | 157.2 | 133.30 |
| August | 126.9 | 109.4 | 116.25 |
| September | 124.3 | 91.8 | 87.60 |
| Oktober | 75.3 | 45.0 | 48.05 |
| November | 33.4 | 16.7 | 23.40 |
| Dezember | 14.3 | 7.6 | 12.71 |
| total 1999 | 1144.0 | 915.3 | 924.08 |
