P412 CEEFAX 412 Sat 30 Mar 19:10/38 1/5 OZONE 6pm Sat 30 Mar Wales, Scotland & N.Ireland Air Ljvjl Quality (ppb) URBAN sites Edinburgh Cjntti Very Good 12 Belfast Centre Very Good 22 Swansea Centre Very Good 32 Cardiff Cjntri Very Good 33 RURAL sites North Scotland Very Good 39 Mid-Scotland Very Good 33 South Scotland Very Good 38 Northern Ireland Very Good 36 Mid-Wales Very Good 34 Data from Department of Environment N England C England S England Air QualP412 CEEFAX 412 Sat 30 Mar 19:10/14 2/5 SULPHUR DIOXIDE 6pm Sat 30 Mar Wales, Scotland & N.Ireland Air Ljvjl Quality (ppb) URBAN sites Edinburgh Cjntri Very Good 2 Belfast Centre Very Good 0 Belfast East Very Good 27 Swansea Centre Very Good 16 Cardiff Cjntri Very Good 2 RURAL sites North Scotland Very Good 0 Data from Department of Environment N England C England S England Air QualP412 CEEFAX 412 Sat 30 Mar 19:19/12 3/5 NITROGEN DIOXIDE 6pm Sat 30 Mar Wales, Scotland & N.Ireland Air Lrvjl Quality (ppb) URBAN sites Edinburgh Cjntti Very Good 40 Glasgow Very Good 45 Belfast Cjntri Very Good 26 Swansea Cjntri Very Good 16 Cardiff Cjntri Very Good 18 RURAL sites North Scotland Very Good 0 Data from Department of Environment N England C England S England Air QualP412 CEEFAX 412 Sat 30 Mar 19:11/28 4/5 BENZENE Wales, Scotland & N.Ireland For 24 hours to Avg Year 6pm Sat 30 March ppb avg All sites are URBAN Edinburgh Centre Low .67 .77 Belfast South Low 1.76 1.09 Cardiff Centre Low 1.13 1.42 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 Sat 30 Mar 19:11/11 5/5 1,3-BUTADIENE Wales, Scotland & N.Ireland For 24 hours to Avg Year 6pm Sat 30 March ppb avg All sites are URBAN Edinburgh Cjntri Low .16 .13 Belfast South Low .30 .19 Cardiff Centre Low .16 .23 1,3-Butadienj is a substance that can cause cancer. Indjpjndjnt health experts have advised that a yearly average of 1 part per billion(ppb) presents an exceedingly small risk to health. Data from Department of Environment N England C England S England Air Qual