09/12/2018 03 sensor failure. Waiting for replacement. TODO Check failure start date ( ie the date when this started reading negative)

Pod serial number: 1912150 Gas sensor type: O3
Failed sensor serial number: 204581101 (Date Code 038) Serial number of new sensor: 204640837 (Date Code 058)

Sensor Failed at 13:15 on 12 Nov 2018 (possibly linked to NO2 failure at same time) Notified AirMonitors 11/12/18 Sensor Received 17/12/18 Replaced 18/12/18 16:30 During this period data may not be reliable. Please allow 2-3 days for sensor to re-base and stabilize.