| Value | Category | Cases | |
|---|---|---|---|
| 1 | flat | 217 |
52.4%
|
| 2 | gentle slope | 141 |
34.1%
|
| 3 | steep slope | 17 |
4.1%
|
| 4 | hilly | 37 |
8.9%
|
| 5 | valley | 2 |
0.5%
|
| Sysmiss | 102 |