| Value | Category | Cases | |
|---|---|---|---|
| 1 | FLAT BOTTOM | 2687 |
67.3%
|
| 2 | FLAT TOP | 196 |
4.9%
|
| 3 | SLIGHTLY SLOPED | 979 |
24.5%
|
| 4 | VERY STEEP | 130 |
3.3%
|
| Sysmiss | 1545 |