| Value | Category | Cases | |
|---|---|---|---|
| 1 | Selection | 14 |
24.6%
|
| 2 | Packaging | 31 |
54.4%
|
| 3 | Storage | 2 |
3.5%
|
| 4 | Others | 10 |
17.5%
|
| Sysmiss | 390 |