| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1. Flat | 6958 |
76.7%
|
| 2 | 2. Slight Slope | 1640 |
18.1%
|
| 3 | 3. Moderate Slope | 303 |
3.3%
|
| 4 | 4. Steep, Hilly | 165 |
1.8%
|
| 11 | .A | 6 | |
| Sysmiss | 2004 |