| Value | Category | Cases | |
|---|---|---|---|
| 1 | Public sys. | 830 |
47.8%
|
| 2 | Deep Hole | 215 |
12.4%
|
| 3 | Tranch | 470 |
27%
|
| 4 | Bucket or barrel | 12 |
0.7%
|
| 5 | Other | 14 |
0.8%
|
| 8 | 9 |
0.5%
|
|
| 9 | 2 |
0.1%
|
|
| 88 | N.A. | 184 |
10.6%
|
| 98 | D.K. | 2 |
0.1%
|
| 99 | 3 | ||
| Sysmiss | 258 |