| Value | Category | Cases | |
|---|---|---|---|
| 1 | Natural Wall | 952 |
78.9%
|
| 2 | Rudimentary Wall | 143 |
11.8%
|
| 3 | Finished Wall | 112 |
9.3%
|
| 5 | Missing | 0 |
0%
|
| Sysmiss | 4 |