| Annual Mean Smoke concentration, | |||
| Site Name | Region | µg m-3 BS | µg m-3 OECD |
| LONDONDERRY 11 | N. Ireland | 21 | 25 |
| BRADFORD 6 | Yorks. & H'side | 20 | 24 |
| MANCHESTER 11 | North-west | 18 | 21 |
| BRAMPTON 1 | Yorks. & H'side | 16 | 19 |
| SOUTH KIRKBY 1 | Yorks. & H'side | 16 | 19 |
| LISBURN 3 | N. Ireland | 16 | 19 |
| LUNDWOOD (BARNSLEY) 1 | Yorks. & H'side | 15 | 18 |
| WOMBWELL 2 | Yorks. & H'side | 15 | 18 |
| ALFRETON 4 | East Mids | 15 | 18 |
| SHOREDITCH 2 | London | 15 | 18 |
| MAGHERAFELT 1 | N. Ireland | 15 | 18 |
| FARNWORTH 8 | North-west | 14 | 16 |
| BARNSLEY 9 | Yorks. & H'side | 14 | 16 |
| GRIMETHORPE 2 | Yorks. & H'side | 14 | 16 |
| MALTBY 2 | Yorks. & H'side | 14 | 16 |
| SEDGLEY 5 | West Mids | 14 | 16 |
| MAIDSTONE 8 | South-east | 14 | 16 |