| Value | Category | Cases | |
|---|---|---|---|
| 1 | Flat | 231 |
72%
|
| 2 | Slight slope | 72 |
22.4%
|
| 3 | Moderate slope | 16 |
5%
|
| 4 | Steep, hilly | 2 |
0.6%
|
| Sysmiss | 140 |