| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 218 | 627 |
17.7%
|
| 2 | Special tools | 13 | 34 |
1%
|
| 3 | Both methods | 19 | 45 |
1.3%
|
| Sysmiss | 669 | 2845 |