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Index Banded Annual Totals for Swansea:
LOW
16 days
MODERATE
7 days
HIGH
0 days
VERY HIGH
0 days

Exceedences

Nitrogen Dioxide Exceedences
Total period : 16/01/2020 05:00 - 23/01/2020 05:00
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 21.22 72.90 70.29
Max 51.64 174.59 133.24
Sdv 0.83 2.49 2.00
Geom. mean 17.63 65.61 63.53
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 20/01/2020 20/01/2020 20/01/2020
Time of max 17:00:00 17:00:00 17:00:00
Perc:99.8 % 51.64 174.59 133.24


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



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