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Index Banded Annual Totals for Swansea:
LOW
93 days
MODERATE
82 days
HIGH
2 days
VERY HIGH
0 days

Exceedences

Nitrogen Dioxide Exceedences
Total period : 19/06/2019 07:00 - 26/06/2019 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 8.92 23.95 28.87
Max 36.05 81.30 77.79
Sdv 0.42 1.36 0.89
Geom. mean 7.34 17.63 26.51
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 25/06/2019 23/06/2019 23/06/2019
Time of max 08:00:00 19:00:00 19:00:00
Perc:99.8 % 36.05 81.30 77.79


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



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