| Value | Category | Cases | |
|---|---|---|---|
| -9 | Refuse to answer | 0 |
0%
|
| -8 | Don't know | 0 |
0%
|
| 1 | Stored in covered container | 2 |
50%
|
| 2 | Stored in other protected environment | 0 |
0%
|
| 3 | Stored unprotected | 0 |
0%
|
| 4 | Burn incinerator | 0 |
0%
|
| 5 | 2 |
50%
|
|
| Sysmiss | 467 |