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Index Banded Annual Totals for Swansea:
LOW
103 days
MODERATE
16 days
HIGH
1 day
VERY HIGH
5 days
annual air quality totals for all Swansea monitoring stations

Diffusion Tubes - Nitrogen Dioxide (NO2)

 34-41 Trawler Road, Marina - facade diffusion tube
2005
Oct 2005 28.10 µg/m3
Nov 2005 38.20 µg/m3
Dec 2005 40.80 µg/m3
Average 2005 35.70 µg/m3
2006
Jan 2006 35.20 µg/m3
Feb 2006 35.20 µg/m3
Mar 2006 21.50 µg/m3
Apr 2006 22.50 µg/m3
May 2006 24.70 µg/m3
Jun 2006 22.60 µg/m3
Jul 2006 20.30 µg/m3
Aug 2006 16.30 µg/m3
Sep 2006 19.90 µg/m3
Oct 2006 27.60 µg/m3
Nov 2006 33.10 µg/m3
Dec 2006 28.80 µg/m3
Average 2006 25.64 µg/m3
2007
Jan 2007 24.30 µg/m3
Feb 2007 33.10 µg/m3
Mar 2007 24.30 µg/m3
Apr 2007 25.30 µg/m3
May 2007 18.70 µg/m3
Jun 2007 19.40 µg/m3
Jul 2007 15.70 µg/m3
Aug 2007 20.70 µg/m3
Sep 2007 23.70 µg/m3
Oct 2007 36.80 µg/m3
Nov 2007 64.60 µg/m3
Dec 2007 33.00 µg/m3
Average 2007 28.30 µg/m3
2008
Jan 2008 22.60 µg/m3
Feb 2008 35.70 µg/m3
Mar 2008 24.00 µg/m3
Apr 2008 19.70 µg/m3
May 2008 21.90 µg/m3
Jun 2008 16.30 µg/m3
Jul 2008 17.70 µg/m3
Aug 2008 14.60 µg/m3
Sep 2008 29.00 µg/m3
Oct 2008 28.80 µg/m3
Nov 2008 32.40 µg/m3
Dec 2008 35.10 µg/m3
Average 2008 24.82 µg/m3
2009
Jan 2009 22.40 µg/m3
Feb 2009 34.10 µg/m3
Mar 2009 28.60 µg/m3
Apr 2009 18.20 µg/m3
Average 2009 25.82 µg/m3
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