| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 734 | 3009 |
84.7%
|
| 2 | Special tools | 32 | 73 |
2%
|
| 3 | Both methods | 71 | 197 |
5.5%
|
| Sysmiss | 82 | 273 |