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Index Banded Annual Totals for Swansea:
LOW
202 days
MODERATE
90 days
HIGH
2 days
VERY HIGH
0 days

Exceedences

Nitrogen Dioxide Exceedences
Total period : 15/10/2019 01:00 - 22/10/2019 01:00
Integration time : 1.0 Hours, Observation limit :1
  Swansea AURN Morriston Morfa Hafod DOAS St Thomas DOAS
  [ppb] [ppb] [ppb] [ug/m3] [ug/m3]
Mean 11.39 36.87 43.42
Max 40.66 97.56 94.01
Sdv 0.62 1.64 1.30
Geom. mean 8.52 30.38 40.25
Exceedance Limit 105.00 105.00 105.00 200.00 200.00
Exceedance (%) 0.00 0.00 0.00 0.00 0.00
Exceedance Count 0 0 0 0 0
Exceedance (Hours) 0.00 0.00 0.00 0.00 0.00
Date of max 21/10/2019 21/10/2019 21/10/2019
Time of max 16:00:00 16:00:00 17:00:00
Perc:99.8 % 40.66 97.56 94.01


All data supplied are non-validated and for information only.



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