| Value | Category | Cases | |
|---|---|---|---|
| 1 | Flat | 10409 |
59%
|
| 2 | Slight slope | 5373 |
30.5%
|
| 3 | Moderate slope | 1202 |
6.8%
|
| 4 | Steep, hilly | 650 |
3.7%
|
| Sysmiss | 59 |