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Index Banded Annual Totals for Swansea:
LOW
192 days
MODERATE
94 days
HIGH
0 days
VERY HIGH
3 days

Exceedences

Nitrogen Dioxide Exceedences
Total period : 09/10/2018 22:00 - 16/10/2018 22:00
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 11.32 34.99 29.55
Max 38.25 98.79 73.88
Sdv 0.64 1.44 1.39
Geom. mean 8.01 29.21 21.46
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 10/10/2018 11/10/2018 10/10/2018
Time of max 06:00:00 18:00:00 07:00:00
Perc:99.8 % 38.25 98.79 73.88


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



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