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Index Banded Annual Totals for Swansea:
LOW
106 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)

 824 Carmarthen Road - facade diffusion tube
2008
Jul 2008 23.80 µg/m3
Aug 2008 22.70 µg/m3
Sep 2008 33.60 µg/m3
Oct 2008 37.80 µg/m3
Nov 2008 23.10 µg/m3
Dec 2008 47.30 µg/m3
Average 2008 31.38 µg/m3
2009
Jan 2009 42.00 µg/m3
Feb 2009 47.50 µg/m3
Mar 2009 41.60 µg/m3
Apr 2009 33.90 µg/m3
Average 2009 41.25 µg/m3
2012
Jan 2012 45.50 µg/m3
Apr 2012 30.90 µg/m3
May 2012 26.10 µg/m3
Jun 2012 21.10 µg/m3
Jul 2012 18.80 µg/m3
Aug 2012 22.60 µg/m3
Average 2012 27.50 µg/m3
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