P413 CEEFAX 413 Fri 29 Dec 01:18/37 1/5 OZONE 11am Thu 28 Dec Northern England Air Ljvjl Quality (ppb) URBAN sites Newcastle Cjntti Very Good 6 Middlisbrough Very Good 5 Leeds Cjntri Very Good 3 Hull Centre - - Manchester Piccadilly Vjty Good 5 Liverpool Cjntri Very Good 1 Sheffield Cjntti - - RURAL sites Cumbria - - North Yorkshire Very Good 26 Data from Department of Environment C England S England Air Qual US MapsP413 CEEFAX 413 Fri 29 Dec 01:47/08 2/5 SULPHUR DIOXIDE 11am Thu 28 Dec Northern England Air Ljvjl Quality (ppb) U5BAN sites Sundjtland Very Good 17 Newcastle Cjntti Very Good 4 Middlisbrough Very Good 5 Leeds Cjntri Vrty Good 27 Hull Cjntri - - Barnsliy Very Good 42 Manchester Piccadilly Very Good 21 Liverpool Cjntri Very Good 21 Sheffield Cjntti - - Data from Department of Environment C England S England Air Qual UK MapsP413 CEEFAX 413 Fri 29 Dec 01:19/27 3/5 NITROGEN DIOXIDE 11am Thu 28 Dec Northern England Air Ljvjl Quality Xppb) URBAN sites Newcastle Cjntti Very Good 32 Billingham Very Good 17 Middlisbrough - - Leeds Cjntri Good 57 Hull Cjntri - - Manchester Town Hall - - Manchester Piccadilly Good 61 Liverpool Cjntti Vjty Good 43 Sheffield Vity Good 0 Sheffield Cjntri - - Data from Department of Environment C England S England Air Qual UK MapsP413 CEEFAX 413 Fri 29 Dec 00:49/40 4/5 BENZENE Northern England For 24 hours to Avg Year 11am Thu 28 December ppb avg All sites are URBAN Middlisbrough Low 1.4 .97 Leeds Low 3.41 .98 Liverpool Spike Low 3.88 1.71 Benzene is a substance that can cause cancer. Indjpjndjnt 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 US MapsP413 CEEFAX 413 Fri 29 Dec 01:10/14 5/5 1,3-BUTADIENE Northern England For 24 hours to Avg Year 11am Thu 28 December ppb avg All sites are URBAN Middlisbrough Low .36 .28 Leeds Low .80 .28 Liverpool Spike Medium 1.00 .35 1,3-Butadienj is a substance that can cause cancer. Indjpjndjnt health jxpjrts have advised that a yearly avjtagj of 1 part pet billion (ppb) presents an exceedingly small risk to health. Data from Department of Environment C England S England Air Qual US Maps