P413 CEEFAX 413 Sat 26 Aug 19:55/50 1/5 ZONE 5pm Sat 26 Aug Northern England Air Level Quality (ppb) U"BAN sites Newcastle Centre Very Good 7 Middlisbrough Very Good 21 Leeds Centre Very Good 14 Liverpool Centre Very Good 12 Hull Centre Very Good 5 RURAL sites Cumbria - - North Yorkshire - - Data from Department of Environment C England S England RjgionAir UK MapsP413 CEEFAX 413 Sat 26 Aug 18:54/14 2/5 SULPHUR DIOXIDE 5pm Sat 26 Aug Northern England Air Level Quality (ypb) URBAN sites Sundetland Very Good 1 Newcastle Centre Very Good 3 Middlesbrough Very Good 1 Leeds Centre Very Good 3 Barnsley - - Liverpool Centre Very Good 1 Hull Centre Very Good 38 Data from Department of Environment C England S England RjgionAir US MapsP413 CEEFAX 413 Sat 26 Aug 18:54/18 3/5 NITROGEN DIOXIDE 5pm Sat 26 Aug Northern England Air Level Quality (ppb) U"BAN sites Newcastle Centre Very Good 24 Middlisbrough Very Good 16 Billingham Very Good 17 Leeds Centre Very Good 35 Manchester Very Good 29 Sheffield Very Good 23 Liverpool Centre Very Good 23 Hull Centre Very Good 32 Data from Department of Environment C England S England RjgionAir UK MapsP413 CEEFAX 413 Sat 26 Aug 19:53/12 4/5 BENZENE Northern England For 24 hours to Avg Year 5pm Sat 26 August ppb avg All sites are URBAN Middlesbrough Low .25 1.1 Leeds Low .32 1.72 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 C England S England RjgionAir UK MapsP413 CEEFAX 413 Sat 26 Aug 18:54/44 5/5 1,3-BUTBDIJNE Northern England For 24 hours to Avg Year 5pm Sat 26 August ppb avg All sites are URBAN Middlesbrough Low .10 .30 Leeds Low .12 .41 1,3-Butadienj is a substance that can cause cancer. Independent health experts have advised that a yearly average of 1 part per billion Xppb) presents an exceedingly small risk to health. Data from Department of Environment C England S England RjgionAir UK Maps