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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 3/4 Pleasant Street - facade diffusion tube
2008
Jul 2008 30.20 µg/m3
Aug 2008 19.60 µg/m3
Sep 2008 42.20 µg/m3
Oct 2008 42.80 µg/m3
Nov 2008 43.30 µg/m3
Dec 2008 41.80 µg/m3
Average 2008 36.65 µg/m3
2009
Jan 2009 49.90 µg/m3
Feb 2009 42.10 µg/m3
Mar 2009 45.70 µg/m3
Apr 2009 42.20 µg/m3
Average 2009 44.98 µg/m3
2012
Jan 2012 45.60 µg/m3
Apr 2012 34.30 µg/m3
May 2012 30.90 µg/m3
Jun 2012 29.90 µg/m3
Jul 2012 26.20 µg/m3
Aug 2012 34.50 µg/m3
Average 2012 33.57 µg/m3
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