| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply is a floor in a building (spontaneous) | 44 |
7.3%
|
| 0 | 550 |
91.7%
|
|
| 50 | 1 |
0.2%
|
|
| 60 | 1 |
0.2%
|
|
| 90 | 1 |
0.2%
|
|
| 100 | 3 |
0.5%
|
|
| Sysmiss | 600 |