| Value | Category | Cases | |
|---|---|---|---|
| 1 | 500 m and less | 7951 |
80.1%
|
| 2 | 501m to 3000 m | 1830 |
18.4%
|
| 3 | more than 3000 m | 138 |
1.4%
|
| Sysmiss | 7 |