| Summer | Autumn | Winter | Spring | |
| El Nino | 126.4 | 74.2 | 54.6 | 92.9 |
| La Nina | 121.6 | 78.9 | 43.7 | 99.7 |
| Neutral | 113.1 | 72.2 | 43.8 | 100.4 |
| Over all | 120.7 | 75.2 | 47.5 | 97.5 |