| Mean filtering |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 90 |
| 90 |
| 90 |
| 90 |
| 90 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 90 |
| 90 |
| 90 |
| 90 |
| 90 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 90 |
| 90 |
| 90 |
| 90 |
| 90 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 90 |
| 0 |
| 90 |
| 90 |
| 90 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 90 |
| 90 |
| 90 |
| 90 |
| 90 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 90 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 10 |
| 20 |
| 30 |
| 30 |
| 30 |
| 20 |
| 10 |
| 0 |
| 20 |
| 40 |
| 60 |
| 60 |
| 60 |
| 40 |
| 20 |
| 0 |
| 30 |
| 60 |
| 90 |
| 90 |
| 90 |
| 60 |
| 30 |
| 0 |
| 30 |
| 50 |
| 80 |
| 80 |
| 90 |
| 60 |
| 30 |
| 0 |
| 30 |
| 50 |
| 80 |
| 80 |
| 90 |
| 60 |
| 30 |
| 0 |
| 20 |
| 30 |
| 50 |
| 50 |
| 60 |
| 40 |
| 20 |
| 10 |
| 20 |
| 30 |
| 30 |
| 30 |
| 30 |
| 20 |
| 10 |
| 10 |
| 10 |
| 10 |
| 0 |
| 0 |
| 0 |
| 0 |
| 0 |
| 11 |