PPM (Parts Per Million)
| Year | Tarket | Result | Remark |
|---|---|---|---|
| 14Year | 50 | 4 | |
| 15Year | 50 | 3 | |
| 16Year | 50 | 31 | |
| 17Year | 50 | 6.6 | |
| 18Year | 50 | 5 | |
| 19Year | 50 | 25 | |
| 20Year | 45 | 7.7 | |
| 21Year | 40 | 12 | |
| 22Year | 40 | 15 | |
| 23Year | 30 | 3.5 | |
| 24Year | 30 | 11 |
PPM (Parts Per Million)
| Year | Tarket | Result | Remark |
|---|---|---|---|
| 14Year | 50 | 4 | |
| 15Year | 50 | 3 | |
| 16Year | 50 | 31 | |
| 17Year | 50 | 6.6 | |
| 18Year | 50 | 5 | |
| 19Year | 50 | 25 | |
| 20Year | 45 | 7.7 | |
| 21Year | 40 | 12 | |
| 22Year | 40 | 15 | |
| 23Year | 30 | 3.5 | |
| 24Year | 30 | 11 |