Integrated intensity maps of CO 2−1, SiO 5− 4, H₂CO 3₀₃−2₀₂, and HCN 1−0 overlaid on the Band 6 (Band 3 for HCN) continuum in grayscale for Ser-emb 8 (N). The emission is integrated from the inner boundary of the slow wing component to the outer boundary of the EHV component as listed in Table 2 for the red and blueshifted emission. The exceptions are SiO and H₂CO maps where only the channels obtained at high spatial resolution are plotted (<26 km s⁻¹ for H₂CO and <40 km s⁻¹ for SiO). The synthesized beam size of the continuum images is 0.′′35 × 0.′′33 for Band 6 and 0.′′79 × 0.′′64 for Band 3; for spectral lines it is 0.′′53 × 0.′′45 (CO), 0.′′55 × 0.′′45 (SiO), 0.′′53 × 0.′′44 (H₂CO), and 0.′′60 × 0.′′56 (HCN). The beam size of the Band 6 spectral line is presented in the bottom-left corner of the H₂CO map and in HCN map for Band 3. Contour levels are [3, 6, 9, 15, 20, 40, 60, 80, 100] for CO, SiO, H₂CO, and redshifted HCN, and [2, 3, 5, 6, 12] for blueshifted HCN, which were multiplied by rms value of moment 0 maps. The rms values for the blueshifted and redshifted side of the outflow in K km s⁻¹ is as follows: CO [19.7, 14.4], SiO [2.2, 2.5], H₂CO [2.8, 2.1], and HCN [9.3, 12.2]. Black ellipses indicate regions from which spectra were extracted for Figs. 4 and B.1.