| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 589 | 2807 |
85.8%
|
| 2 | Special tools | 27 | 56 |
1.7%
|
| 3 | Both methods | 42 | 54 |
1.6%
|
| Sysmiss | 77 | 354 |