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Index Banded Annual Totals for Swansea:
LOW
93 days
MODERATE
18 days
HIGH
1 day
VERY HIGH
4 days
annual air quality totals for all Swansea monitoring stations

Diffusion Tubes - Nitrogen Dioxide (NO2)

 HSBC Bank 15 Dillwyn Road - facade diffusion tube
2008
Jul 2008 27.80 µg/m3
Aug 2008 24.70 µg/m3
Sep 2008 47.10 µg/m3
Oct 2008 38.00 µg/m3
Nov 2008 39.40 µg/m3
Dec 2008 36.80 µg/m3
Average 2008 35.63 µg/m3
2009
Jan 2009 51.30 µg/m3
Feb 2009 47.60 µg/m3
Mar 2009 42.60 µg/m3
Apr 2009 57.30 µg/m3
Average 2009 49.70 µg/m3
2012
Jan 2012 50.90 µg/m3
Apr 2012 24.60 µg/m3
Jun 2012 29.30 µg/m3
Jul 2012 23.60 µg/m3
Aug 2012 26.00 µg/m3
Average 2012 30.88 µg/m3
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