| Value | Category | Cases | |
|---|---|---|---|
| 1 | flat | 71 |
46.4%
|
| 2 | gentle slope | 70 |
45.8%
|
| 3 | steep slope | 1 |
0.7%
|
| 4 | hilly | 8 |
5.2%
|
| 5 | other. specify: | 3 |
2%
|
| Sysmiss | 6 |