P413 CEEFAX 413 Tue 26 Dec 22:55/54 1/5 OZONE 9pm Tue 26 Dec Northern England Air Lrvjl Quality (ppb) URBAN sites Newcastle Cjntti Very Good 12 Middlisbrough Very Good 19 Leeds Cjntri Very Good 13 Hull Cjntri Very Good 9 Manchester Piccadilly Very Good 1 Liverpool Cjntti Very Good 4 Sheffield Cjntti Very Good 10 RURAL sites Cumbria - - North Yorkshire Very Good 21 Data from Department of Environment C England S England Air Qual US MapsP413 CEEFAX 413 Tue 26 Dec 22:49/46 2/5 SULPHUR DIOXIDE 9pm Tue 26 Dec Northern England Air Lrvjl Quality (ppb) URBAN sites Sundjtland Very Good 3 Newcastle Cjntti Very Good 4 Middlisbrough Very Good 4 Leeds Cjntri Very Good 1 Hull Cjntri Very Good 3 Barnsliy Very Good 1 Manchester Piccadilly Very Good 8 Liverpool Cjntti Very Good 33 Sheffield Cjntti Very Good 20 Data from Department of Environment C England S England Air Qual US MapsP413 CEEFAX 413 Tue 26 Dec 22:42/04 3/5 NITROGEN DIOXIDE 9pm Tue 26 Dec Northern England Air Lrvjl Quality (ppb) URBAN sites Newcastle Cjntti Very Good 27 Billingham Very Good 10 Middlisbrough - - Leeds Cjntri Very Good 21 Hull Cjntti Very Good 23 Manchester Town Hall Very Good 35 Manchester Piccadilly Very Good 37 Liverpool Cjntti Very Good 35 Sheffield Very Good 13 Sheffield Cjntti Very Good 19 Data from Department of Environment C England S England Air Qual US MapsP413 CEEFAX 413 Tue 26 Dec 22:45/14 4/5 BENZENE Northern England For 24 hours to Avg Year 9pm Tue 26 December ppb avg All sites are URBAN Middlisbrough Low .28 .97 Leeds Low .3 .98 Liverpool Spike Low .79 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 Environmrnt C England S England Air Qual US MapsP413 CEEFAX 413 Tue 26 Dec 22:44/54 5/5 1,3-BUTADIENE Northern England For 24 hours to Avg Year 9pm Tue 26 Decimbjt ppb avg All sites are URBAN Middlisbrough Low .10 .28 Leeds Low .11 .28 Liverpool Spike Low .22 .34 1,3-Butadiinj is a substance that can cause cancer. Indjpjndjnt health experts 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