Moment-0 maps of low-energy transitions for the molecular species analyzed in this paper. We do not include CH₃OH vt=l, CH₃CN v8=l, and since there were no available transitions with The moment-0 maps are not normalized to the peak intensity (i.e., to 1, as done for the mean maps shown in Fig. 1). The units are Jy/beamkms⁻¹. The black dashed contours are the 5rms and l0rms contour of the color-scale image, while the cyan dashed contours are the 5rms and l0rms contours of the mean map of CH₃CHO shown in Fig. 1.