| 6 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 9 | Good | NO2 | NO2 | None | None |
| 6 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 8 | Good | NO2 | NO2 | None | None |
| 6 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 7 | Good | NO2 | NO2 | None | None |
| 6 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 5 | Good | NO2 | NO2 | None | None |
| 6 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 3 | Good | NO2 | NO2 | None | None |
| 6 | Good | CO | CO | None | People with heart disease are the group most at risk. |