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Index Banded Annual Totals for Swansea:
LOW
152 days
MODERATE
35 days
HIGH
2 days
VERY HIGH
34 days

Exceedences

Nitrogen Dioxide Exceedences
Total period : 04/08/2022 07:00 - 11/08/2022 07:00
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 25.43 30.16
Max 63.79 88.79
Sdv 1.13 1.47
Geom. mean 22.24 25.79
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 05/08/2022 10/08/2022
Time of max 22:00:00 01:00:00
Perc:99.8 % 63.79 88.79


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



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