| Value | Category | Cases | |
|---|---|---|---|
| 1 | DIRECT FROM SOURCE | 619 |
3%
|
| 2 | COVERED CONTAINER | 2235 |
10.9%
|
| 3 | UNCOVERED CONTAINER | 82 |
0.4%
|
| 4 | UNABLE TO OBSERVE | 63 |
0.3%
|
| Sysmiss | 17541 |
85.4%
|