| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 0 |
0%
|
| -7 | Does not apply is a floor in a building (spontaneous) | 0 |
0%
|
| 0 | 116 |
96.7%
|
|
| 100 | 4 |
3.3%
|