| Value | Category | Cases | |
|---|---|---|---|
| 1 | Flat | 1761 |
74.7%
|
| 2 | Slight slope | 488 |
20.7%
|
| 3 | Moderate slope | 83 |
3.5%
|
| 4 | Steep, hilly | 27 |
1.1%
|
| Sysmiss | 1 |