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Fig. 2


Vertical profiles of acetylene (C2H2, solid), ethane (C2H6, long dashed), methylacetylene (CH3C2H, short dashed), propane (C3H8, dotted), diacetylene (C4H2, long dash-dotted), ethylene (C2H4, short dash-dotted), and methane (CH4, double dashed lines). The black line represents our computation results under the quiescent atmospheric conditions at 15°S. The profiles retrieved by Guerlet et al. (2009, 2010), with associated one-sigma uncertainties shown to the right and left of the derived profiles, are plotted in blue. There are no observational data for C2H4 in quiescent conditions.

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