| Value | Category | Cases | |
|---|---|---|---|
| 1 | Flat | 2514 |
74.7%
|
| 2 | Roughly Conical | 459 |
13.6%
|
| 3 | Gable (triangular cross-section) | 208 |
6.2%
|
| 4 | None of the above | 74 |
2.2%
|
| 5 | No roof covering | 109 |
3.2%
|
| Sysmiss | 890 |