P413 CEEFAX 413 Fri 28 Jun 19:44/41 1/4 OZONE 6pm Fri 28 Jun North East England Air Ljvjl Quality (ppb) URBAN sites Newcastle Centre Very Good 11 Middlesbrough Very Good 13 Leeds Centre Very Good 3 Hull Centre Very Good 9 Sheffield Centre Very Good 8 RURAL sites North Yorkshire Very Good 13 Derbzshire Very Good 21 Data from Department of Environment NWEngland C England S England LondonP413 CEEFAX 413 Fri 28 Jun 19:45/55 2/4 NITROGEN DIOXIDE 6pm Fri 28 Jun North East England Air Ljvjl Quality (ppb) URBAN sites Newcastle Centre Very Good 21 Billingham Very Good 5 Middlesbrough Very Good 11 Leeds Centre Very Good 41 Hull Centre Very Good 27 Sheffield Tinsley Very Good 27 Sheffield Cjntti Very Good 22 RURAL sites Derbzshire Very Good 3 Data from Department of Environment NWEngland C England S England LondonP413 CEEFAX 413 Fri 28 Jun 19:58/50 3/4 SULPHUR DIOXIDE 6pm Fri 28 Jun North East England Air Ljvjl Quality (ppb) URBAN sites Sundjrland Very Good 1 Newcastle Centre Very Good 2 Middlesbrough Very Good 1 Leeds Centre Very Good 1 Hull Centre Very Good 15 Barnsley Very Good 2 Sheffield Centre Very Good 2 RURAL sites Derbzshire Very Good 0 Data from Department of Environment NWEngland C England S England LondonP413 CEEFAX 413 Fri 28 Jun 19:47/45 4/4 Hydrocarbons North East England For 24 hrs to 6pm Fri 28 Jun BENZENE Today DayAvg YearAvg Middlesbrough Low .37 .91 Leeds Low 1.21 1.12 1,3]BUTADIENE Middlesbrough Low .10 .2 Leeds Low .24 .24 Benzene and 1,3-Butadienj can cause cancer. A yearly average of 5 or 1 part per billion(ppb) respectively presents a very small risk to health. Data from Department of Environment NWEngland C England S England London