Fig. A.4

HI velocity channel maps. The HI data are from the Effelsberg–Bonn HI Survey (EBHIS) and Galactic All-Sky Survey (GASS; HI4PI Collaboration 2016). The intensity unit is K. The contour indicates a level of 30 MJy str−1 at the Planck 857 GHz emission. The velocities are indicated in the top left corner of each panel. The velocity width of each channel map is 1.3 km s−1.
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