Table 1:

Details of co-locations with reference instruments

Dates	Reference Instrument	Pollutants	Location
Pre: 8/1 – 8/4/2016	aBaseline Mocon Series 900 Analyzer	CH4, TNMHCs	Los Angeles, CA
Post: 10/20 −10/28/2016	aPicarro cavity ring-down spectrometer	CH4	Los Angeles, CA
Post: 11/2 – 11/12/2016	bSynspec Alpha 115	TNMHCs	Shafter, CA

^aoperated by SCAQMD,

^boperated by SJVAD