Maps of SiO/CO ratio for blueshifted part of Ser-emb 8(N) outflow for each velocity component. For the EHV component, only the channels for which SiO emission was obtained at high spatial resolution are taken into account (<40 km s⁻¹). The synthesized beams of the CO (red) and continuum (black) are shown in the bottom-left corner of EHV plot with sizes 0.′′35 × 0.′′33 and 0.′′55 × 0.′′45 for continuum and CO, respectively. The black contours show 1.3 mm continuum emission.