| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 2 |
0.6%
|
| -7 | Does not apply is a floor in a building (spontaneous) | 8 |
2.3%
|
| 0 | 100 |
28.4%
|
|
| 10 | 2 |
0.6%
|
|
| 25 | 1 |
0.3%
|
|
| 30 | 1 |
0.3%
|
|
| 40 | 2 |
0.6%
|
|
| 50 | 3 |
0.9%
|
|
| 60 | 5 |
1.4%
|
|
| 63 | 1 |
0.3%
|
|
| 65 | 2 |
0.6%
|
|
| 70 | 6 |
1.7%
|
|
| 80 | 1 |
0.3%
|
|
| 85 | 1 |
0.3%
|
|
| 90 | 2 |
0.6%
|
|
| 100 | 215 |
61.1%
|