| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply is a floor in a building (spontaneous) | 0 |
0%
|
| 0 | 63 |
41.4%
|
|
| 20 | 1 |
0.7%
|
|
| 30 | 3 |
2%
|
|
| 40 | 5 |
3.3%
|
|
| 50 | 2 |
1.3%
|
|
| 100 | 78 |
51.3%
|
|
| Sysmiss | 359 |