| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Impassable | 24 |
1%
|
| 2 | Very poor | 360 |
15%
|
| 3 | Poor | 376 |
15.7%
|
| 4 | Fair | 504 |
21%
|
| 5 | Good | 584 |
24.3%
|
| 6 | Very good | 552 |
23%
|
| 7 | Not applicable | 0 |
0%
|