19/01/2023 07:00 O3 analyser flat-lining. Investigation needed.

23/01/2022 15:30 Flow Alarms on both Flow A and Flow B, no breeze from exhaust, no blockages - probbaly points to a problem with internal pump.

Quote for repair requested.

O3 Data will be missing during this period.

02/02/23 12:49 - 15:32 Engineer Visit found vaccum pump blocked and nee pump kit required. Replaced. O3 now working again

For Engineers Report see Urban Observatory Github

https://github.com/urbanobservatory/deployments/blob/master/Precision%20Station%20Reports/TYNE_BRIDGE/02_02_2023_Newcastle%20University_Tyne%20Bridge%20_Callout%20Chargeable_11781_Marius%20Barbulescu.pdf

During this period , O3 data will be missing or inaccurate and shoudl be ignored.