| Duration (minutes) | Return period (years) | |||
| 5 | 10 | 25 | 50 | |
| IVF | 1.03 | 0.95 | 0.87 | 0.83 |
| R2 (%) | 92.9 | 98.1 | 99.9 | 99.6 |
| r | 0.995 | 0.996 | 0.997 | 0.992 |