| Value | Category | Cases | |
|---|---|---|---|
| 1 | Flat | 100 |
61.7%
|
| 2 | Slight slope | 46 |
28.4%
|
| 3 | Moderate slope | 14 |
8.6%
|
| 4 | Steep,hilly | 2 |
1.2%
|
| Sysmiss | 1638 |