All ¹³CH₃OH lines detected towards NGC 6334I MM2 I–II. Frequencies are shifted to the rest frame of the individual regions. Green lines represent the modelled spectra of ¹³CH₃OH without blending, i.e., excluding the contribution from CH₃OCHO (including the contribution from CH₃OCHO does not change the ¹³CH₃OH column density of the best-fit model). To enhance the readability of some panels, both data and model have been scaled up by the factor in the top right corner of the respective panel.