| Value |
Category |
| 1 |
Less than 3 minutes (less than 200m) |
| 2 |
3 - 6 minutes (200m - 400m) |
| 3 |
More than 6 minutes (more than 400m) |
| 8 |
Not applicable |
| 9 |
Unspecified |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.