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Aims and objectives
Smoke general conclusions
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Appendix A9 average concentrations Average pollution Average winter pollution built-up area cent Central Sub-Region city centre coal commercial area concentrations recorded Conurbation country sites current smoke daily concentration decrease dense East Anglia East Midlands edge emissions given in Table high-density housing high-density residential area high-pollution episodes higher I I I I I I I I I I I I industrial area Ironbridge kilometres Leicester London medium-density housing medium-density residential area Merseyside National Survey sites north-east north-west Norwich Nottingham open country open land open spaces peak/average ratios Peterborough pollution levels population population density reduction Regional average Regional country average Regional urban average residential estate rural situated smoke and sulphur smoke concentrations smoke control smoke levels smoke-control areas South Wales south-east south-west southern outskirts square kilometre St Helens Stoke-on-Trent sulphur dioxide concentrations sulphur dioxide levels town centre urban areas valley West Midlands Region winter average