| Value |
Category |
| 00 |
No mother link |
| 11 |
Direct link, clarity level 1 |
| 22 |
Second level link, clarity level 2 |
| 23 |
Second level link, clarity level 3 |
| 24 |
Second level link, clarity level 4 |
| 25 |
Second level link, clarity level 5 |
| 27 |
Second level link, clarity level 7 |
| 32 |
Third level link, clarity level 2 |
| 33 |
Third level link, clarity level 3 |
| 34 |
Third level link, clarity level 4 |
| 35 |
Third level link, clarity level 5 |
| 37 |
Third level link, clarity level 7 |
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.