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Index Banded Annual Totals for Swansea:
LOW
101 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)

 Emperor Restaurant, 206 High Street - facade diffusion tube
2008
Jul 2008 33.80 µg/m3
Aug 2008 32.80 µg/m3
Sep 2008 52.40 µg/m3
Oct 2008 48.00 µg/m3
Nov 2008 50.00 µg/m3
Dec 2008 64.50 µg/m3
Average 2008 46.92 µg/m3
2009
Jan 2009 52.30 µg/m3
Feb 2009 54.10 µg/m3
Mar 2009 50.50 µg/m3
Apr 2009 58.70 µg/m3
Average 2009 53.90 µg/m3
2012
Jan 2012 34.00 µg/m3
Apr 2012 27.50 µg/m3
May 2012 40.20 µg/m3
Jun 2012 33.60 µg/m3
Jul 2012 27.90 µg/m3
Aug 2012 29.60 µg/m3
Average 2012 32.13 µg/m3
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