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Fig. 3

image

Example of a Mars spectrum obtained by SOFIA/EXES, spatially integrated over the entire slit. Differences in colors show the 17 spectral orders. The spectrum was observed on 16 March 2016 with nine minutes integration. Circular symbols represent the strong terrestrial CH4 lines. The red ones are the CH4 lines that are used in this analysis. The other lines visible in this spectrum are H2 O, HDO, CO2 (628), and CO2 (638).

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