| Value | Category | Cases | |
|---|---|---|---|
| 1 | flat | 232 |
90.3%
|
| 2 | gentle slope | 15 |
5.8%
|
| 3 | hilly | 2 |
0.8%
|
| 4 | other. specify: | 8 |
3.1%
|
| Sysmiss | 94 |