Zonneschijn — 2020
| Maand | Nissewaard | Midden-Delfland | Verschil |
|---|---|---|---|
| Jan | 145.3 uren | 147.4 uren | -2.1 |
| Feb | 184.2 uren | 185.3 uren | -1.1 |
| Mrt | 298.9 uren | 301.6 uren | -2.7 |
| Apr | 366.8 uren | 367.3 uren | -0.5 |
| Mei | 428.5 uren | 429.6 uren | -1.1 |
| Jun | 420.1 uren | 423.3 uren | -3.2 |
| Jul | 417.3 uren | 419.5 uren | -2.2 |
| Aug | – | – | – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |