| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 3 |
0.8%
|
| 1 | One hour or less | 7 |
1.8%
|
| 2 | 1 |
0.3%
|
|
| 4 | 1 |
0.3%
|
|
| 5 | 5 |
1.3%
|
|
| 6 | 8 |
2.1%
|
|
| 8 | 1 |
0.3%
|
|
| 10 | 1 |
0.3%
|
|
| 14 | 1 |
0.3%
|
|
| 15 | 1 |
0.3%
|
|
| 20 | 2 |
0.5%
|
|
| 22 | 1 |
0.3%
|
|
| 24 | 23 |
6.1%
|
|
| 27 | 1 |
0.3%
|
|
| 30 | 37 |
9.7%
|
|
| 32 | 3 |
0.8%
|
|
| 35 | 12 |
3.2%
|
|
| 36 | 19 |
5%
|
|
| 37 | 1 |
0.3%
|
|
| 38 | 3 |
0.8%
|
|
| 40 | 2 |
0.5%
|
|
| 42 | 1 |
0.3%
|
|
| 48 | 63 |
16.6%
|
|
| 50 | 1 |
0.3%
|
|
| 55 | 1 |
0.3%
|
|
| 60 | 2 |
0.5%
|
|
| 72 | 69 |
18.2%
|
|
| 74 | 1 |
0.3%
|
|
| 75 | 2 |
0.5%
|
|
| 90 | 1 |
0.3%
|
|
| 96 | 32 |
8.4%
|
|
| 100 | 2 |
0.5%
|
|
| 120 | 27 |
7.1%
|
|
| 144 | 2 |
0.5%
|
|
| 150 | 2 |
0.5%
|
|
| 168 | 5 |
1.3%
|
|
| 172 | 1 |
0.3%
|
|
| 180 | 1 |
0.3%
|
|
| 192 | 5 |
1.3%
|
|
| 196 | 2 |
0.5%
|
|
| 200 | 1 |
0.3%
|
|
| 240 | 12 |
3.2%
|
|
| 300 | 2 |
0.5%
|
|
| 360 | 5 |
1.3%
|
|
| 460 | 1 |
0.3%
|
|
| 480 | 1 |
0.3%
|
|
| 700 | 1 |
0.3%
|
|
| 720 | 2 |
0.5%
|
|
| 972 | 1 |
0.3%
|
|
| 1600 | 1 |
0.3%
|