| Value | Category | Cases | |
|---|---|---|---|
| 1 | DIRECT FROM SOURCE | 756 |
1.2%
|
| 2 | COVERED CONTAINER | 7441 |
11.6%
|
| 3 | UNCOVERED CONTAINER | 4008 |
6.2%
|
| 8 | UNABLE TO OBSERVE | 33 |
0.1%
|
| Sysmiss | 52162 |
81%
|