| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | Open container | 139 | 156 | 
                                    
                                    25.1%
                                 | 
| 2 | Closed container | 274 | 314 | 
                                    
                                    50.6%
                                 | 
| 3 | Others | 1 | 1 | 
                                    
                                    0.2%
                                 | 
| Sysmiss | 140 | 150 |