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Index Banded Annual Totals for Swansea:
LOW
97 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)

 Friends of Blind 3 De La Beche Street - facade diffusion tube
2008
Jul 2008 36.60 µg/m3
Aug 2008 35.50 µg/m3
Sep 2008 51.90 µg/m3
Oct 2008 53.50 µg/m3
Nov 2008 58.20 µg/m3
Dec 2008 48.10 µg/m3
Average 2008 47.30 µg/m3
2009
Jan 2009 52.00 µg/m3
Feb 2009 52.70 µg/m3
Mar 2009 49.20 µg/m3
Apr 2009 47.90 µg/m3
Average 2009 50.45 µg/m3
2012
Jan 2012 57.10 µg/m3
Apr 2012 41.70 µg/m3
May 2012 33.90 µg/m3
Jun 2012 29.40 µg/m3
Jul 2012 29.10 µg/m3
Aug 2012 35.80 µg/m3
Average 2012 37.83 µg/m3
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