Observed spectra of O-bearing COMs (black) towards N1SE1 (top) and N1NW3 (bottom). The modelled spectra of the hot-core component are shown in pink (if detected) or purple (if not), those of the outflow component in orange (if detected) or brown (if not). The complete Weeds model is drawn in turquoise. The dashed line indicates the 3σ threshold for detection, where σ is taken from Table 2 in Belloche et al. (2019). The frequency in GHz at the reference velocity of 62 km s⁻¹ is shown in each panel.