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Compliance Dashboard

Note: This dashboard only shows data from the monitoring sites at Heathrow Airport.


Summary (year to date)

Monitoring Site Annual mean (µgm-3) Data Capture Number of hours exceeding Max hourly exceedance (µgm-3)
Heathrow Green Gates 19.4 99.5 0 n/a
Heathrow Oaks Road 19.1 99.5 0 n/a
London Harlington 19.2 99.1 0 n/a
London Hillingdon Oxford Avenue 21.6 99.4 0 n/a

Exceedance history (year to date)

There are no exceedances to show