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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)

 L/Post outdide Wilks 33 St Helens Road - Lamppost diffusion tube
2008
Jul 2008 28.10 µg/m3
Aug 2008 23.90 µg/m3
Sep 2008 46.00 µg/m3
Oct 2008 42.70 µg/m3
Nov 2008 42.20 µg/m3
Dec 2008 51.90 µg/m3
Average 2008 39.13 µg/m3
2009
Jan 2009 47.80 µg/m3
Feb 2009 43.80 µg/m3
Mar 2009 35.50 µg/m3
Apr 2009 53.60 µg/m3
Average 2009 45.17 µg/m3
2012
Jan 2012 49.40 µg/m3
Apr 2012 32.80 µg/m3
Jun 2012 30.20 µg/m3
Jul 2012 23.60 µg/m3
Aug 2012 28.30 µg/m3
Average 2012 32.86 µg/m3
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