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Index Banded Annual Totals for Swansea:
LOW
102 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)

 21 Martin Street, Morriston - façade diffusion tube
2012
Jan 2012 43.40 µg/m3
Apr 2012 33.80 µg/m3
May 2012 39.80 µg/m3
Jun 2012 28.60 µg/m3
Jul 2012 25.60 µg/m3
Aug 2012 32.30 µg/m3
Average 2012 33.92 µg/m3
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