24/06/22 - Nitrogen gas : Acoem engineer reported Nitrogen bottle appears oxidised and recommended replacement.

24/08/22 09:50 - 12:05 Gas installation (Nitrogen)

Old cylinder  : 114365
New cylinder : 112991, 2700 psi, Conc NO 448

Engineers report : see Urban Observatory Github :

https://github.com/urbanobservatory/deployments/blob/master/Precision%20Station%20Reports/RVI/24_08_2022_Newcastle%20University_RVI_Commissioning_AML11315_Marius%20Barbulescu.pdf