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Index Banded Annual Totals for Swansea:
LOW
109 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)

 4 Nyanza Terrace - facade diffusion tube
2008
Jul 2008 27.30 µg/m3
Aug 2008 25.40 µg/m3
Sep 2008 40.30 µg/m3
Oct 2008 41.20 µg/m3
Nov 2008 31.40 µg/m3
Dec 2008 37.70 µg/m3
Average 2008 33.88 µg/m3
2009
Jan 2009 43.10 µg/m3
Feb 2009 42.60 µg/m3
Mar 2009 32.00 µg/m3
Apr 2009 50.10 µg/m3
Average 2009 41.95 µg/m3
2012
Jan 2012 36.30 µg/m3
Apr 2012 26.00 µg/m3
May 2012 29.90 µg/m3
Jun 2012 28.90 µg/m3
Jul 2012 22.40 µg/m3
Aug 2012 27.10 µg/m3
Average 2012 28.43 µg/m3
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