NO2 24 hr 2.3 ppb 168 hr 0.32 ppb
NOx 24 hr 2.3 ppb 168 hr 0.37 ppb
SO2 24 hr 3.8 ppb 168 hr 0.54 ppb
03 24 hr 2.7 ppb 168 hr 0.39 ppb
NH3 24 hr 2.3 ppb  168 hr 0.32 ppb

 

 Please note that all the above ranges depend on the sensitivity of the analyzing instruments.