| Value | Category | Cases | |
|---|---|---|---|
| 1 | hole smaller than a thumb/figer 0.2-2 cm | 10 |
6.1%
|
| 2 | hole larger than thumb but smaller than fist/hand 2-10 cm | 13 |
8%
|
| 3 | hole larger than fist but smaller than head 10-25 cm | 6 |
3.7%
|
| 4 | hole larger than head, more than 25 cm | 7 |
4.3%
|
| 5 | no holes | 127 |
77.9%
|
| Sysmiss | 6318 |