| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 78 |
29.1%
|
| 1 | One hour or less | 7 |
2.6%
|
| 2 | 1 |
0.4%
|
|
| 5 | 1 |
0.4%
|
|
| 15 | 1 |
0.4%
|
|
| 16 | 2 |
0.7%
|
|
| 20 | 7 |
2.6%
|
|
| 24 | 1 |
0.4%
|
|
| 30 | 6 |
2.2%
|
|
| 36 | 1 |
0.4%
|
|
| 40 | 6 |
2.2%
|
|
| 45 | 1 |
0.4%
|
|
| 50 | 14 |
5.2%
|
|
| 60 | 5 |
1.9%
|
|
| 70 | 2 |
0.7%
|
|
| 80 | 4 |
1.5%
|
|
| 90 | 1 |
0.4%
|
|
| 100 | 15 |
5.6%
|
|
| 110 | 1 |
0.4%
|
|
| 120 | 7 |
2.6%
|
|
| 127 | 1 |
0.4%
|
|
| 137 | 1 |
0.4%
|
|
| 150 | 11 |
4.1%
|
|
| 156 | 1 |
0.4%
|
|
| 176 | 1 |
0.4%
|
|
| 180 | 2 |
0.7%
|
|
| 200 | 25 |
9.3%
|
|
| 240 | 2 |
0.7%
|
|
| 250 | 10 |
3.7%
|
|
| 280 | 1 |
0.4%
|
|
| 300 | 11 |
4.1%
|
|
| 340 | 1 |
0.4%
|
|
| 400 | 8 |
3%
|
|
| 450 | 1 |
0.4%
|
|
| 480 | 1 |
0.4%
|
|
| 500 | 8 |
3%
|
|
| 520 | 1 |
0.4%
|
|
| 552 | 1 |
0.4%
|
|
| 600 | 5 |
1.9%
|
|
| 720 | 1 |
0.4%
|
|
| 750 | 1 |
0.4%
|
|
| 800 | 2 |
0.7%
|
|
| 1000 | 4 |
1.5%
|
|
| 1200 | 1 |
0.4%
|
|
| 1500 | 1 |
0.4%
|
|
| 1800 | 1 |
0.4%
|
|
| 2000 | 2 |
0.7%
|
|
| 4000 | 1 |
0.4%
|
|
| 5000 | 1 |
0.4%
|