| Value |
Category |
| 0 |
Less than one class |
| 1 |
Class 1 |
| 2 |
Class 2 |
| 3 |
Class 3 |
| 4 |
Class 4 |
| 5 |
Class 5 |
| 6 |
Class 6 |
| 7 |
Class 7 |
| 8 |
Class 8 |
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.