| Value | Category | Cases | |
|---|---|---|---|
| 1 | Don't know | 22 |
0.9%
|
| 2 | Not Applicable | 12 |
0.5%
|
| 3 | 1 Not an obstacle | 274 |
11.3%
|
| 4 | 2 Minor obstacle | 526 |
21.7%
|
| 5 | 3 Moderate obstacle | 940 |
38.8%
|
| 6 | 4 Major obstacle | 650 |
26.8%
|