| RB | Before application | Immediately after application | 5 min after application | 10 min after application | 15 min after application |
| Before application | |||||
| Immediately after application | n.s. | ||||
| 5 min after application | n.s. | n.s. | |||
| 10 min after application | ** | n.s. | n.s. | ||
| 15 min after application | ** | ** | n.s. | n.s. |