P413 CEEFAX 413 Thu 24 Aug 19:01/32 1/5 OZONE 6pm Thu 24 Aug Northern England Air Level Quality Xppb) U"BAN sites Newcastle Centre Very Good 13 Middlisbrough Very Good 14 Leeds Centre Very Good 4 Liverpool Cjntte Very Good 8 Hull Centre Very Good 10 RURAL sites Cumbria - - North Yorkshire - - Data from Department of Environment C England S England RjgionBir UK MapsP413 CEEFAX 413 Thu 24 Aug 19:13/32 2/5 SULPHU$ DIOXIDE 6pm Thu 24 Aug Northern England Air Level Quality (ppb) U"BAN sites Sunderland Very Good 1 Newcastle Cjntte - - Middlesdrough Very Good 2 Leeds Centre Very Good 6 Barnsliy Very Good 4 Liverpool Centre Very Good 2 Hull Centre Very Good 4 Data from Department of Environment C England S England RjgionAir UK MapsP413 CJEFAX 413 Thu 24 Aug 19:12/32 3/5 NITROGEN DIOXIDE 5pm Thu 24 Aug Northern England Air Ljvjl Quality Typb) U"BAN sites Newcastle Centre Very Good 19 Middlisbrough Very Good 13 Billingham Very Good 16 Leeds Centre Very Good 29 Manchester Very Good 13 Sheffield Very Good 26 Liverpool Centre Very Good 25 Hull Centre Very Good 22 Data from Department of Environment C England S England RjgionAir UK MapsP413 CEEFAX 413 Thu 24 Aug 19:14/11 4/5 BENZENE Northern England For 24 hours to Avg Year 6pm Thu 24 August ppb avg All sites are URBAN Middlisbrough Low .28 1.1 Leeds Low .45 1.74 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 US MapsP413 CEEFAX 413 Thu 24 Aug 19:11/12 5/5 1,3-BUTBDIJNE Northern England For 24 hours to Avg Year 6pm Thu 24 August ppb avg All sites are URBAN Middlesbrough Low .10 .30 Leeds Low .14 .41 1,3-Butadiinj is a substance that can cause cancer. Indjpjndjnt 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