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Index Banded Annual Totals for Swansea:
LOW
93 days
MODERATE
18 days
HIGH
1 day
VERY HIGH
4 days

Diffusion Tubes - Nitrogen Dioxide (NO2)

 The Money Shop 28a The Kingsway - facade diffusion tube
2008
Jul 2008 29.90 µg/m3
Aug 2008 39.30 µg/m3
Sep 2008 56.70 µg/m3
Oct 2008 54.10 µg/m3
Nov 2008 63.80 µg/m3
Dec 2008 48.50 µg/m3
Average 2008 48.72 µg/m3
2009
Jan 2009 52.30 µg/m3
Feb 2009 52.50 µg/m3
Mar 2009 59.30 µg/m3
Apr 2009 43.00 µg/m3
Average 2009 51.77 µg/m3
2012
Jan 2012 65.00 µg/m3
Apr 2012 51.00 µg/m3
May 2012 47.40 µg/m3
Jun 2012 33.50 µg/m3
Jul 2012 39.50 µg/m3
Aug 2012 33.90 µg/m3
Average 2012 45.05 µg/m3