| Value | Category | Cases | |
|---|---|---|---|
| 1 | Flat | 811 |
69.9%
|
| 2 | Slight slope | 293 |
25.3%
|
| 3 | Moderate slope | 51 |
4.4%
|
| 4 | Steep, hilly | 5 |
0.4%
|
| Sysmiss | 251 |