| Week | Mean | Standard deviation | Correlation | |||
| 0 | 1 | 4 | 6 | |||
| 0 | 26.4 | 5.0 | 0.52 | 0.56 | 0.44 | |
| 1 | 19.1 | 9.1 | 0.84 | 0.63 | ||
| 4 | 19.8 | 8.5 | 0.68 | |||
| 6 | 22.2 | 10.7 | ||||