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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)

 Copper Quarter 1 - facade diffusion tube
2007
Nov 2007 39.30 µg/m3
Dec 2007 49.00 µg/m3
Average 2007 44.15 µg/m3
2008
Jan 2008 44.60 µg/m3
Feb 2008 49.00 µg/m3
Apr 2008 28.50 µg/m3
May 2008 33.70 µg/m3
Jun 2008 27.70 µg/m3
Jul 2008 31.30 µg/m3
Aug 2008 26.50 µg/m3
Sep 2008 36.40 µg/m3
Nov 2008 32.70 µg/m3
Dec 2008 47.50 µg/m3
Average 2008 35.79 µg/m3
2009
Jan 2009 10.50 µg/m3
Feb 2009 38.80 µg/m3
Mar 2009 6.40 µg/m3
Apr 2009 30.10 µg/m3
Average 2009 21.45 µg/m3
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