| Value |
Category |
| -1 |
not applicable |
| 1 |
chemical |
| 2 |
pit |
| 3 |
bucket |
| 4 |
vip |
| 5 |
flush |
| 6 |
chemical & flush |
| 7 |
pit & flush |
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.