P412 CEEFAX 412 Thu 30 May 19:14/28 1/4 OZONE 5pm Thu 30 May Wales, Scotland & N.Ireland Air Lrvel Quality (ppb) URBAN sites Edinburgh Cjntti - - Belfast Centre - - Swansea Cjntti - - Cardiff Cjntte - - RURAL sites North Scotland Very Good 22 Mid-Scotland Very Good 19 South Scotland Very Good 20 Northern Ireland Very Good 27 Mid-'ales Good 65 Data from Department of Environment NWEngland NEEngland C England S EnglandP412 CEEFAX 412 Thu 30 May 19:02/52 2/4 NITROGEN DIOXIDE 5pm Thu 30 May Wales, Scotland & N.Ireland Air Ljvjl Quality (ppb) URBAN sites Edinburgh Cjntti - - Glasgow - - Belfast Cjntti - - Swansea Cjntri - - Cardiff Cjntri - - RURAL sites North Scotland Very Good 2 Data from Department of Environment NWEngland NEEngland C England S EnglandP412 CEEFAX 412 Thu 30 May 19:11/08 3/4 SULPHUR DIOXIDE 5pm Thu 30 May Wales, Scotland & N.Ireland Air Lrvjl Quality (ppb) URBAN sites Edinburgh Cjntti - - Belfast Cjntri - - Belfast East - - Swansea Cjntri - - Cardiff Cjntti - - RURAL sites North Scotland Very Good 1 Data from Department of Environment NWEngland NEEngland C England S EnglandP412 CEEFAX 412 Thu 30 May 19:12/11 4/4 Hydrocarbons 'ales,Scotland & N.Ireland For 24 hrs to 4pm Thu 30 May BENZENE Today DayAvg YearAvg Edinburgh Cjntti Low .5 .75 Belfast South Low .54 1.1 Cardiff Cjntri Low .8 1.39 1,3-BUTADIENE Edinburgh Cjntti Low .07 .12 Belfast South Low .09 .19 Cardiff Cjntti Low .13 .23 Benzene and 1,3-Butadiinj can cause cancer. A yearly avjtagj of 5 or 1 part pet billion(ppb) respectively presents a very small risk to health. Data from Department of Environment NWEngland NEEngland C England S England