| Value | Category | Cases | |
|---|---|---|---|
| -999 | 1 |
0.7%
|
|
| 1 | First class | 88 |
61.5%
|
| 2 | Second class | 12 |
8.4%
|
| 3 | Third class | 1 |
0.7%
|
| 4 | 41 |
28.7%
|