P412 CEEFAX 412 Sun 9 Apr 02:35/03       1/5  OZONE Northern England 10pm Sat 8 Apr Latest Daily (ppb) Maximum URBAN sites Newcastle Centre V Gd 9 V Gd 23 Leeds Centre V Gd 21 V Gd 30 Liverpool Centre V Gd 25 V Gd 34 Hull Centre V Gd 16 V Gd 25 RURAL sites Cumbria V Gd 23 V Gd 40 North Yorkshire V Gd 35 V Gd 38  Data from Department of Environment C England S England Scot/Wales/NI Maps
P412 CEEFAX 412 Sun 9 Apr 02:34/00       2/5  NITROGEN DIOXIDE Northern England 10pm Sat 8 Apr Latest Daily (ppb) Maximum All sites are URBAN Newcastle Centre Good 52 Good 61 Billingham - - V Gd 25 Leeds Centre V Gd 20 V Gd 22 Manchester V Gd 41 V Gd 41 Sheffield V Gd 19 V Gd 23 Liverpool Centre V Gd 22 V Gd 37 Hull Centre V Gd 21 Good 51  Data from Department of Environment C England S England Scot/Wales/NI Maps
P412 CEEFAX 412 Sun 9 Apr 02:36/01       3/5  SULPHUR DIOXIDE Northern England 10pm Sat 8 Apr Latest Daily (ppb) Maximum All sites are URBAN Sunderland V Gd 0 V Gd 4 Newcastle Centre V Gd 6 V Gd 10 Leeds Centre V Gd 2 V Gd 6 Barnsley V Gd 11 V Gd 15 Liverpool Centre V Gd 6 Good 77 Hull Centre V Gd 2 V Gd 23  Data from Department of Environment C England S England Scot/Wales/NI Maps
P412 CEEFAX 412 Sun 9 Apr 02:34/11       4/5  BENZENE Northern England For 24 hours to Avg Year 10pm Sat 8 April ppb avg All sites are URBAN Middlesbrough Low .6 1N07 Leeds Low .49 2.22 Benzene is a substance that can cause cancerN Independent health experts have advised that a yfarly average of 5 parts per billion(ppb) presents an exceedingly small riss to health.  Data from Department of Environment C England S England Scot/'ales/NI Maps
P412 CEEFAX 412 Sun 9 Apr 02:31/00       5/5  1,3-BUTADIENE Northern England For 24 hours to Avg Year 10pm Sat 8 April ppb avg All sites are URBAN Middlesbrough Low .10 .25 Leeds Low .27 .48 1,3-Butadiene is a substance that can cause cancerN Indepdndent health experts have advised that a yearly average of 1 part per billion (pp" presents an exceedingly small risk to healthN  Data from Department of Environment