First-moment (intensity-weighted velocity) map of CH₃OH (top panels) lines at 254.0153 GHz (left) and 241.2679 GHz (right). Pixels with S/Ns of less than three are masked out. The zero-moment (integrated intensity) map for each line is overlaid in grey contours. Contours start at 9σ and are in steps of 12σ, with σ = 1.34 × 10⁻² and 7.16 × 10⁻³ Jy beam⁻¹ km s⁻¹, for the left and right panel, respectively. The black and green crosses mark the locations of the peak continuum emission and peak integrated line intensity, respectively. Middle panel: same as top panels but for NH₂ CHO lines at 239.952 GHz (left) and 254.727 GHz (right). Contours start at 9σ and are in steps of 12σ, with σ = 6.17 × 10⁻³ and 6.25 × 10⁻³ Jy beam⁻¹ km s⁻¹, for the left and right panel, respectively. Bottom panels: same as top panels but for CH₃ C₂H lines at 239.2523 GHz (left) and 239.2112 GHz (right). Contours start at 6σ and are in steps of 3σ, with σ = 7.29 × 10⁻³ and 6.35 × 10⁻³ Jy beam⁻¹ km s⁻¹, for the left and right panel, respectively.