| Value |
Category |
| -7 |
difficult to answer |
| 0 |
|
| 1 |
brick, stone |
| 2 |
panels |
| 3 |
blocks |
| 4 |
monolite |
| 5 |
wood |
| 6 |
other material (mixed) |
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.