Current values of nitrogen oxide concentrations in the atmosphere

Maximum admitted value 255ppmv

Acid4 plant at 25-06-2018 09:03:48 : 40 ppmv
Acid2 plant at 25-06-2018 09:03:51 : 68 ppmv
Acid3 plant at 25-06-2018 09:03:47 : 69 ppmv