ALMA spectra of methanol and several other species observed toward the southwest image of PKS 1830−211 during our campaign (July-August 2019). For lines in B4, the spectra were averaged over both B4a and B4b observations (see Fig. 3 for time variability). To avoid crowded plots and large spreads in absorption depths, the lines from A-CH₃OH (a), E-CH₃OH (b,c), and ¹³CH₃OH (d) are separated, and they are also split according to low-level energy E_low < 30 K (b) and E_low > 30 K (c) for E-CH₃OH. For comparison, some other species are shown in (e), for intermediate opacity lines, and (f), for lines with the highest opacity.