| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
0.5%
|
| -7 | Does not apply is a floor in a building (spontaneous) | 58 |
10%
|
| 0 | 184 |
31.7%
|
|
| 3 | 1 |
0.2%
|
|
| 10 | 1 |
0.2%
|
|
| 18 | 1 |
0.2%
|
|
| 20 | 4 |
0.7%
|
|
| 30 | 4 |
0.7%
|
|
| 40 | 1 |
0.2%
|
|
| 50 | 7 |
1.2%
|
|
| 60 | 3 |
0.5%
|
|
| 70 | 5 |
0.9%
|
|
| 80 | 6 |
1%
|
|
| 85 | 1 |
0.2%
|
|
| 86 | 1 |
0.2%
|
|
| 90 | 1 |
0.2%
|
|
| 95 | 3 |
0.5%
|
|
| 96 | 1 |
0.2%
|
|
| 98 | 1 |
0.2%
|
|
| 99 | 2 |
0.3%
|
|
| 100 | 292 |
50.3%
|
|
| Sysmiss | 1 |