| 2 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 6 | Good | NO2 | NO2 | None | None |
| 2 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 4 | Good | NO2 | NO2 | None | None |
| 2 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 3 | Good | NO2 | NO2 | None | None |
| 2 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 4 | Good | NO2 | NO2 | None | None |
| 2 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 5 | Good | NO2 | NO2 | None | None |
| 2 | Good | CO | CO | None | People with heart disease are the group most at risk. |
| 5 | Good | NO2 | NO2 | None | None |