XCLASS fitting results for the Clark-imaged WideX data at the hot core position. Results for the outflow and two cold core positions, as well as SDI-imaging for the hot core, are shown in Figs. C.2–C.8. The data are shown in black and the combined fit in red, while the fits for individual species are shown in different colours below, in some cases scaled for greater visibility, with common colours used for different chemical families (blue for organics, yellow and orange for sulphur-bearing, red for nitrogen-bearing, purple for species bearing both nitrogen and oxygen). The data is cut off below the peak intensities for ¹³CO and SO in order to improve the visibility of the fainter lines. Vertical dashed lines are shown at the position of the brightest transition of each species to guide the eye. The grey band on the data spectrum, which extends beyond the range of the data on the right and left, indicates 3σ (σ = 0.044 K).