Full spectrum extracted at the dust peak position HH 212-MM1 (top panel: lower side band data; lower panel: upper side band data). The horizontal red lines mark the regions of the spectrum plotted in Fig. 2 where most of the methanol lines are found. The best fit LTE synthetic spectrum of methanol is displayed in red over the full 8 GHz bandwidth. In the upper panel, the SO₂(8_2,6–7_1,7) is marked because it overlaps with a CH₃OH line (the 25_-3–24_-2−E,ν_t = 1 transition, E_u= 1078 K). This methanol line was not included in the fit.