| Value |
Category |
| 1 |
Concrete |
| 2 |
Wood |
| 3 |
Metal sheets/zinks |
| 4 |
Tile |
| 5 |
Grass |
| 6 |
Leaves |
| 7 |
Other, specify |
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.