| Value | Category | Cases | |
|---|---|---|---|
| 0 | 1 |
0%
|
|
| 1 | s: shelled | 3989 |
44.7%
|
| 2 | u: unshelled | 2737 |
30.7%
|
| 3 | not applicable | 2196 |
24.6%
|
| Sysmiss | 2549 |