| Value |
Category |
| 0 |
|
| 1 |
Earthen |
| 2 |
Plastic |
| 3 |
Other non-metal |
| 4 |
Iron (galvanized) |
| 5 |
Copper |
| 6 |
Stainless steel |
| 7 |
Brass |
| 8 |
Other metal |
| 9 |
No storage |
| 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.