| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 23 |
1.6%
|
| -7 | Does not apply is a floor in a building (spontaneous) | 77 |
5.3%
|
| 0 | 710 |
49.1%
|
|
| 1 | 2 |
0.1%
|
|
| 3 | 1 |
0.1%
|
|
| 5 | 5 |
0.3%
|
|
| 8 | 1 |
0.1%
|
|
| 10 | 6 |
0.4%
|
|
| 15 | 4 |
0.3%
|
|
| 17 | 1 |
0.1%
|
|
| 20 | 11 |
0.8%
|
|
| 30 | 5 |
0.3%
|
|
| 40 | 5 |
0.3%
|
|
| 50 | 29 |
2%
|
|
| 60 | 3 |
0.2%
|
|
| 67 | 1 |
0.1%
|
|
| 70 | 3 |
0.2%
|
|
| 75 | 1 |
0.1%
|
|
| 80 | 7 |
0.5%
|
|
| 90 | 2 |
0.1%
|
|
| 98 | 1 |
0.1%
|
|
| 99 | 2 |
0.1%
|
|
| 100 | 546 |
37.8%
|