Selected emission lines for CH₃OCH₃, ν= 0, over-plotted with the best-fit non-uniform LIME model with a single jump of the CH₃OCH₃ abundance at 70 or 100 K (see Table 3). The observed spectrum is displayed in black, the model for CH₃OCH₃, ν= 0, with an abundance jump at 70 K in light grey and at 100 K in dark grey. The value of E_u for each transition is given in the upper right corner of each panel.