Velocity clusters derived with DBSCAN for DCN (3–2). The velocity of a cluster is shown in each panel in color, and the discarded data points are shown in the last panel. The 1.4 mm continuum data are presented in white contours, and the levels are 5, 10, 20, 40, 80, and 160×σ_cont (σ_cont=0.94mJy beam⁻¹). In the first panel, the outflow directions are indicated and the sources are marked. A scale bar of 1000au is shown in the top left corner. The synthesized beam of the line and continuum data is shown in the bottom left and right panels, respectively. The velocity clusters for HC₃N and CH₃ OH are presented in Fig. C.2. The corresponding amplitude I_peak and FWHM line width ∆3 of all three transitions are presented in Figs. C.3 and C.4, respectively.