| Phenomena | El Nino | La Nina | ||||||
| Strength | Weak | Moderate | Strong | Very Strong | Weak | Moderate | Strong | |
| Number of cases | 8 | 6 | 3 | 3 | 8 | 6 | 3 | |
| Frequency | 12% | 9% | 4% | 4% | 12% | 9% | 4% | |
| Total number | 20 Cases | 17 Cases | ||||||
| Total frequency | 30% | 26% | ||||||