P412 CEEFAX 412 Thu 17 Aug 19:23/17 1/5 OZONE Wales, Scotland & N.Ireland 6pm Thu 17 Aug Latest Daily Xppb) Maximum U$BAN sites Edinburgh Centre V Gd 8 V Gd 25 Belfast Cjntrj V Gd 8 V Gd 15 Cardiff Centre Good 86 Poor 100 Swansea Centre Good 76 Good 77 RU$BL sites North Scotland - - V Gd 23 Mid-Scotland - - V Gd 40 South Scotland - - V Gd 40 Northern Ireland - - V Gd 41 Mid-Wbles - - Good 85 Data from Department of Environment N England C England S England RjgionAirP412 CEEFAX 412 Thu 17 Aug 19:28/35 2/5 SULPHU$ DIOXIDE Wales, Scotland & N.Ireland 6pm Thu 17 Aug Latest Daily Xppb) Maximum URBAN sites Edinburgh Centre V Gd 7 Good 100 Belfast East V Gd 2 V Gd 29 Belfast Centre V Gd 19 V Gd 36 Cardiff Centre V Gd 8 V Gd 17 Swansea Cjntte V Gd 6 V Gd 33 RURBL sites North Scotland - - V Gd 0 Data from Department of Environment N England C England S England RjgionBirP412 CJEFAX 412 Thu 17 Aug 19:13/28 3/5 NITROGEN DIOXIDE Wblis, Scotland & N.Ireland 6pm Thu 17 Aug Latest Daily Xppb) Maximum U$BAN sites Edinburgh Centre Good 69 Good 69 Glasgow V Gd 47 Good 54 Belfast Cjntte V Gd 41 V Gd 43 Cardiff Centre V Gd 17 Good 61 Swansea Centre V Gd 21 V Gd 45 RURBL sites North Scotland - - V Gd 0 Data from Department of Environment N England C England S England RjgionAirP412 CEEFAX 412 Thu 17 Aug 19:17/16 4/5 BENZENE Wbles, Scotland & N.Ireland For 24 hours to Avg Year 5pm Thu 17 August ppb avg All sites are U$BAN Edinburgh Centre Low 1.36 .68 Cardiff Cjntte Low 1.09 1.39 Belfast Cjntti Low 1.87 .97 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 RjgionAirP412 CEEFAX 412 Thu 17 Aug 19:15/47 5/5 1,3-eUTBDIJNE Wales, Scotland & N.Ireland For 24 hours to Avg Year 6pm Thu 17 August ppb avg All sites are URBAN Edinburgh Centre Low .21 .19 Cardiff Cjntrj - - .26 Belfast Centre Low .30 .23 1,3-Butadiinj 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 RjgionAir