| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 313 | 790 |
22.2%
|
| 2 | Special tools | 12 | 16 |
0.5%
|
| 3 | Both methods | 22 | 69 |
2%
|
| Sysmiss | 400 | 2676 |