| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 72 | 196 |
6%
|
| 2 | Special tools | 2 | 2 |
0.1%
|
| 3 | Both methods | 8 | 9 |
0.3%
|
| Sysmiss | 778 | 3075 |