Trace gases used in Ray et al., Age spectra and other transport diagnostics in the North American monsoon upper troposphere and lower stratosphere from SEAC4RS in situ measurements n-Butane_WAS i-Butane_WAS Propane_WAS Ethyne_WAS 1_2-dichloroethane_WAS Ethane_WAS C2Cl4_WAS CHCl3_WAS HFC-152a_WAS CH3Br_WAS HCFC-141b_WAS HCFC-22_WAS HFC-134a_WAS H-1211_WAS HCFC-142b_WAS CCl4_WAS CFC-11_WAS CFC-113_WAS CFC-12_WAS CFC-114_WAS