09/06/22 - Nitrogen gas : Acoem engineer reported Nitrogen bottle appears oxidised (NO2 reading 33ppm during span)

21/06/2022 Gas Ordered

22/072022 Gas installed

Old cylinder  : 115025
New cylinder : 4882A , psi 2600, NO 467, NOx 468

Engineers report : see Urban Observatory Github :

https://github.com/urbanobservatory/deployments/blob/master/Precision%20Station%20Reports/COAST_RD/22_07_2022_Newcastle%20University_North%20Tyneside_Coast%20Road%20_Commissioning_11369_Marius%20Barbulescu.pdf