| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Flat | 4342 |
74.6%
|
| 2 | 2. Slight slope | 1091 |
18.7%
|
| 3 | 3. Moderate slope | 277 |
4.8%
|
| 4 | 4. Steep hilly | 109 |
1.9%
|
| Sysmiss | 5 |