| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 944 | 2450 |
29%
|
| 2 | Special tools | 20 | 23 |
0.3%
|
| 3 | Both methods | 63 | 82 |
1%
|
| Sysmiss | 1792 | 5893 |