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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 5 Morfa Terrace, Landore - facade diffusion tube
2005
Dec 2005 80.60 µg/m3
Average 2005 80.60 µg/m3
2006
Jan 2006 72.00 µg/m3
Feb 2006 73.40 µg/m3
Mar 2006 52.80 µg/m3
Apr 2006 66.10 µg/m3
May 2006 68.50 µg/m3
Jun 2006 66.30 µg/m3
Jul 2006 70.30 µg/m3
Aug 2006 46.50 µg/m3
Sep 2006 67.60 µg/m3
Oct 2006 70.80 µg/m3
Nov 2006 75.30 µg/m3
Dec 2006 75.50 µg/m3
Average 2006 67.09 µg/m3
2007
Jan 2007 65.90 µg/m3
Feb 2007 74.00 µg/m3
Mar 2007 59.10 µg/m3
Apr 2007 63.20 µg/m3
May 2007 61.40 µg/m3
Jun 2007 56.60 µg/m3
Jul 2007 68.80 µg/m3
Aug 2007 58.10 µg/m3
Sep 2007 60.60 µg/m3
Oct 2007 80.60 µg/m3
Nov 2007 79.30 µg/m3
Dec 2007 77.40 µg/m3
Average 2007 67.08 µg/m3
2008
Jan 2008 82.90 µg/m3
Feb 2008 86.70 µg/m3
Mar 2008 63.70 µg/m3
Apr 2008 69.60 µg/m3
May 2008 74.30 µg/m3
Jul 2008 49.60 µg/m3
Aug 2008 34.70 µg/m3
Sep 2008 65.60 µg/m3
Oct 2008 83.20 µg/m3
Nov 2008 79.20 µg/m3
Dec 2008 75.10 µg/m3
Average 2008 69.51 µg/m3
2009
Jan 2009 64.00 µg/m3
Feb 2009 88.80 µg/m3
Mar 2009 61.40 µg/m3
Apr 2009 62.70 µg/m3
Average 2009 69.23 µg/m3
2012
Jan 2012 53.90 µg/m3
Apr 2012 46.90 µg/m3
May 2012 44.10 µg/m3
Jun 2012 46.20 µg/m3
Jul 2012 40.90 µg/m3
Average 2012 46.40 µg/m3
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