| Time (Minutes) | Frequency |
| 0.5 | 01 (0.4%) |
| 1.0 | 13 (5.2%) |
| 1.5 | 25 (10.0%) |
| 2.0 | 35 (14.0%) |
| 2.5 | 46 (18.4%) |
| 3.0 | 30 (12.0%) |
| 3.5 | 42 (16.8%) |
| 4.0 | 28 (11.2%) |
| 4.5 | 14 (5.6%) |
| 5.0 | 11 (4.4%) |
| 5.5 | 03 (1.2%) |
| 6.0 | 02 (0.8%) |
| Total | 250 (100%) |