Font size too small?   Increase Font size | Decrease font size | See other Accessibility Options.
Index Banded Annual Totals for Swansea:
LOW
99 days
MODERATE
19 days
HIGH
1 day
VERY HIGH
5 days

Diffusion Tubes - Nitrogen Dioxide (NO2)

 36/38 Uplands Crescent - facade diffusion tube
2008
Jul 2008 24.50 µg/m3
Aug 2008 24.10 µg/m3
Sep 2008 34.40 µg/m3
Oct 2008 21.60 µg/m3
Nov 2008 37.10 µg/m3
Dec 2008 30.40 µg/m3
Average 2008 28.68 µg/m3
2009
Jan 2009 39.80 µg/m3
Feb 2009 41.70 µg/m3
Mar 2009 36.60 µg/m3
Apr 2009 31.40 µg/m3
Average 2009 37.37 µg/m3
2012
Jan 2012 41.40 µg/m3
Apr 2012 28.30 µg/m3
May 2012 25.50 µg/m3
Jun 2012 22.10 µg/m3
Jul 2012 22.60 µg/m3
Aug 2012 21.40 µg/m3
Average 2012 26.88 µg/m3