| Value | Category | Cases | |
|---|---|---|---|
| 1 | DIRECT FROM SOURCE | 65 | 
                                    
                                    0.8%
                                 | 
| 2 | COVERED CONTAINER | 1701 | 
                                    
                                    21.9%
                                 | 
| 3 | UNCOVERED CONTAINER | 4 | 
                                    
                                    0.1%
                                 | 
| 8 | UNABLE TO OBSERVE | 95 | 
                                    
                                    1.2%
                                 | 
| Sysmiss | 5885 | 
                                    
                                    75.9%
                                 |