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Index Banded Annual Totals for Swansea:
LOW
99 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)

 Cecil Jones 212 Oxford Street - facade diffusion tube
2008
Jul 2008 46.40 µg/m3
Sep 2008 70.50 µg/m3
Oct 2008 67.10 µg/m3
Nov 2008 76.30 µg/m3
Dec 2008 62.20 µg/m3
Average 2008 64.50 µg/m3
2009
Jan 2009 69.40 µg/m3
Feb 2009 76.50 µg/m3
Mar 2009 59.90 µg/m3
Apr 2009 64.10 µg/m3
Average 2009 67.48 µg/m3
2012
Jan 2012 61.20 µg/m3
Apr 2012 49.20 µg/m3
May 2012 47.00 µg/m3
Jun 2012 38.50 µg/m3
Jul 2012 37.50 µg/m3
Aug 2012 32.20 µg/m3
Average 2012 44.27 µg/m3
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