Fig. C.1
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Abundance of the denoted species, χi, versus visual extinction, AV. Benchmark of the medium-sized chemical network (teal) against the reduced network (orange) and full network (purple), focusing on molecular hydrogen chemistry. The external FUV radiation field, in units of the Draine field (Draine 1978), and cosmic-ray ionization rate are annotated in the subfigure titles.
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