| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 118 | 5208 |
4.2%
|
| 2 | Special tools | 9 | 269 |
0.2%
|
| 3 | Both methods | 12 | 350 |
0.3%
|
| Sysmiss | 3166 | 119248 |