| Value | Category | Cases | |
|---|---|---|---|
| 1 | hole smaller than a thumb/figer 0.2-2 cm | 37 |
7.1%
|
| 2 | hole larger than thumb but smaller than fist/hand 2-10 cm | 41 |
7.9%
|
| 3 | hole larger than fist but smaller than head 10-25 cm | 30 |
5.8%
|
| 4 | hole larger than head, more than 25 cm | 21 |
4%
|
| 5 | no holes | 390 |
75.1%
|
| Sysmiss | 5962 |