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Fig. C.2

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Observed and modelled oH2D+(110 − 111) (left), N2H+(4 − 3) (middle), and DCO+(5 − 4) (right) spectra towards selected positions in H-MM1. The positions are indicated with square markers on the maps in Fig. C.1. The model spectra are shown in red. The offsets are with respect to the column density peak of the core. The model is the same as in Fig. C.1, and the scaling factors of the N2H+ and DCO+ abundances are also the same. The intensity scale is TA*$T_{\rm{A}}^*$.

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