Integrated intensity maps over all velocities for SiO, CH₃OH, H₂CO, and CS (color coding). Superimposed are the blue (2.09–3.94 km s⁻¹) and red (3.94–7.32 km s⁻¹) emissions for each molecule. Blue and red dots indicate the position of the maximum emissions. The level of each contour (in K km s⁻¹) is indicated in each figure. The color map is the integrated intensity map of each line integrated over all velocities. The black contours show the continuum emission, and the black dot shows its maximum. The levels for the continuum are 5.5 × 10⁻³, 6.0 × 10⁻³, and 6.5 × 10⁻³ mJy.