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

Diffusion Tubes - Nitrogen Dioxide (NO2)

 48 Ravenhill Road - facade diffusion tube
2008
Aug 2008 23.90 µg/m3
Sep 2008 39.20 µg/m3
Oct 2008 31.90 µg/m3
Nov 2008 24.70 µg/m3
Dec 2008 47.00 µg/m3
Average 2008 33.34 µg/m3
2009
Jan 2009 43.50 µg/m3
Feb 2009 41.40 µg/m3
Mar 2009 43.50 µg/m3
Apr 2009 52.20 µg/m3
Average 2009 45.15 µg/m3
2012
Jan 2012 36.60 µg/m3
Apr 2012 25.50 µg/m3
May 2012 30.10 µg/m3
Jun 2012 25.40 µg/m3
Jul 2012 25.70 µg/m3
Aug 2012 18.40 µg/m3
Average 2012 26.95 µg/m3
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