| Sample | n | 1 | 2 | 3 | 4 |
| TMS 98/0581 | 3 | 42.91c ± 0.01 | 41.23c ± 0.00 | 40.80c ± 0.00 | 40.60c ± 0.00 |
| TMS 98/0505 | 3 | 51.15b ± 0.01 | 47.41b ± 0.00 | 45.95b ± 0.00 | 45.54b ± 0.00 |
| TMS 98/0524 | 3 | 55.32a ± 0.01 | 54.47a ± 0.00 | 51.91a ± 0.00 | 51.92a ± 0.00 |