| Value |
Category |
| -99 |
Don't Know |
| 1 |
Solid slab |
| 2 |
Slightly cracked - not exposing content |
| 3 |
Cracked - exposing content |
| 4 |
Collapsing |
| 5 |
|
| Sysmiss |
|
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.