| Samples | Exposure time (days) | Total UV dose (J) | Total UV dose/area (J/cm2) |
| PSD | 0 | 0 | 0 |
| PRH | |||
| PSD_1 | 7 | 19262.88 | 105.695 |
| PRH_1 | |||
| PSD_2 | 12 | 33022.08 | 181.191 |
| PRH_2 |