Integrated CH₃OH(2_k − 1_k) line intensity contours superimposed on the oH₂D⁺(1₁₀ −1₁₁) N₂H⁺(4 − 3), and DCO⁺(5 − 4) maps of H-MM1. The contour levels are 2, 3, and 4 K km s⁻¹ (on the T_B scale). The methanol observations at 96.7 GHz are from ALMA and have an angular resolution of 4″. The colour scales of the pixel images are the same as in Fig. 3. The APEX and ALMA beams are shown in the bottom right.