P412 CEEFAX 412 Fri 29 Dec 01:10/12 1/5 OZONE 11am Thu 28 Dec Wales, Scotland & N.Ireland Air Lrvjl Quality (ppb) URBAN sites Edinburgh Cjntti Very Good 4 Belfast Cjntri Very Good 4 Swansea Cjntri Very Good 9 Cardiff Cjntri Very Good 6 RU5AL sites North Scotland - - Mid-Scotland - - South Scotland - - Northern Ireland - - Mid-Wales - - Data from Department of Environment N England C England S England Aiz QualP412 CEEFAX 412 Fri 29 Dec 01:44/37 2/5 SULPHUR DIOXIDE 11am Thu 28 Dec Wales, Scotland & N.Ireland Air Ljvjl Quality (ppb) URBAN sites Edinburgh Cjntti Vjty Good 31 Belfast Cjntri Good 79 Belfast East Poor 337 Swansea Cjntri Very Good 13 Cardiff Cjntri Very Good 3 RURAL sites North Scotland - - Data from Department of Environment N England C England S England Air QualP412 CEEFAX 412 Fri 29 Dec 01:47/58 3/5 NITROGEN DIOXIDE 11am Thu 28 Dec Wales, Scotland & N.Ireland Air Ljvjl Quality (ppb) URBAN sites Edinburgh Cjntti Good 55 Glasgow Very Good 46 Belfast Cjntri Poor 110 Swansea Cjntri Very Good 23 Cardiff Cjntri Very Good 27 RURAL sites North Scotland - - Data from Department of Environment N England C England S England Air QualP412 CEEFAX 412 Fri 29 Dec 00:15/24 4/5 BENZENE Wales, Scotland & N.Ireland For 24 hours to Avg Year 11am Thu 28 December ppb avg All sites are URBAN Edinburgh Cjntti Low 2.37 .71 Belfast South - - .99 Cardiff Cjntri Low 1.36 1.34 Benzene is a substance that can cause cancer. Independent health experts have advised that a yearly average of 5 parts per billion(ppb) presents an exceedingly small risk to health. Data from Department of Environment N England C England S England Air QualP412 CEEFAX 412 Fri 29 Dec 00:47/47 5/5 1,3-BUTADIENE Wales, Scotland & N.Ireland For 24 hours to Avg Year 11am Thu 28 December ppb avg All sites are URBAN Edinburgh Cjntti Low .55 .17 Belfast South - - .21 Cardiff Cjntri Low .20 .26 1,3-Butadiinj is a substance that can cause cancer. Indjpjndjnt health experts have advised that a yearly avjtagj of 1 part pet billion(ppb) presents an exceedingly small risk to health. Data from Department of Environment N England C England S England Air Qual