| Value | Category | Cases | |
|---|---|---|---|
| 1 | Flat | 1469 |
57.4%
|
| 2 | Slight slope | 827 |
32.3%
|
| 3 | Moderate slope | 196 |
7.7%
|
| 4 | Steep, hilly | 67 |
2.6%
|
| Sysmiss | 31 |