P413 CEEFAX 413 Sat 30 Mar 19:10/35 1/5 OZONE 6pm Sat 30 Mar Northern England Air Ljvjl Quality (ppb) URBAN sites Newcastle Cjntti Very Good 16 Middlesbrough Very Good 31 Leeds Cjntri Very Good 16 Hull Centre Very Good 10 Manchester Piccadilly Very Good 9 Liverpool Cjntri Very Good 30 Sheffield Cjntti Very Good 22 RURAL sites Cumbria - - North Yorkshire Very Good 43 Data from Department of Environment C England S England Air Qual UK MapsP413 CEEFAX 413 Sat 30 Mar 19:10/15 2/5 SULPHUR DIOXIDE 6pm Sat 30 Mar Northern England Air Ljvjl Quality (ppb) URBAN sites Sundjrland Very Good 0 Newcastle Cjntri Very Good 2 Middlisbrough - - Leeds Centre Very Good 3 Hull Centre Very Good 9 Barnsley Very Good 7 Manchester Piccadilly Very Good 4 Liverpool Centre Very Good 2 Sheffield Cjntte Very Good 13 Data from Department of Environment C England S England Air Qual UK MapsP413 CEEFAX 413 Sat 30 Mar 19:10/13 3/5 NITROGEN DIOXIDE 6pm Sat 30 Mar Northern England Air Ljvjl Quality (ppb) URBAN sites Newcastle Cjntri Very Good 39 Billingham Very Good 9 Middlesbrough Very Good 15 Leeds Centre Very Good 27 Hull Centre Good 52 Manchester Town Hall Very Good 38 Manchester Piccadilly Very Good 40 Liverpool Cjntti Very Good 16 Sheffield Tinsliy Very Good 20 Sheffield Cjntti Very Good 24 Data from Department of Environment C England S England Air Qual UK MapsP413 CEEFAX 413 Sat 30 Mar 19:11/29 4/5 BENZENE Northern England For 24 hours to Avg Year 6pm Sat 30 March ppb avg All sites are URBAN Middlisbrough Low .28 1 Leeds Low .7 1.08 Liverpool Spike - - 1.53 Benzene is a substance that can cause cancer. Independent health experts have advised that a yearly average of 5 parts pet billion(ppb) presents an exceedingly small risk to health. Data from Department of Environment C England S England Air Qual UK MapsP413 CEEFAX 413 Sat 30 Mar 19:11/12 5/5 1,3-BUTADIENE Northern England For 24 hours to Avg Year 6pm Sat 30 March ppb avg All sites are URBAN Middlesbrough Low .07 .21 Leeds Low .16 .26 Liverpool Spike - - .30 1,3-Butadienj 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 C England S England Air Qual UK Maps