| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Manual | 83 | 2872 |
2.3%
|
| 2 | Special tools | 8 | 429 |
0.3%
|
| 3 | Both methods | 11 | 343 |
0.3%
|
| Sysmiss | 3203 | 121431 |