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Index Banded Annual Totals for Swansea:
LOW
105 days
MODERATE
10 days
HIGH
1 day
VERY HIGH
5 days
annual air quality totals for all Swansea monitoring stations

Diffusion Tubes - Nitrogen Dioxide (NO2)

 135 St Teilo Street, Pontardulais - facade diffusion tube
2012
Jan 2012 35.10 µg/m3
Apr 2012 26.00 µg/m3
May 2012 27.40 µg/m3
Jun 2012 18.30 µg/m3
Jul 2012 16.30 µg/m3
Aug 2012 17.50 µg/m3
Average 2012 23.43 µg/m3
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