| Value | Category | Cases | |
|---|---|---|---|
| 1 | FLAT BOTTOM | 2699 |
41.1%
|
| 2 | FLAT TOP | 352 |
5.4%
|
| 3 | SLIGHTLY SLOPED | 863 |
13.2%
|
| 4 | VERY STEEP | 73 |
1.1%
|
| Sysmiss | 2573 |
39.2%
|