Zoom-ins on the template spectra at wavelength regions centered on the 3.3 µm AIB (Peeters et al. 2024, top), the 6.2 µm AIB (second from top), the 7.7 µm AIB (second from bottom), and the 11.2 µm AIB (bottom). Each spectrum (on an F_ν scale) is normalised by the peak surface brightness of the indicated AIB on the y-axes in each panel. The vertical tick marks indicate the positions of identified (blue) or tentative (black) AIBs and components (see Table A.1 and main text). A post-pipeline correction for residual artifacts was performed for Ch2-long (10.02–11.70 µm), Ch3-medium (13.34–15.57 µm), and Ch3-long (15.41–17.98 µm). For further details, see Appendix B. Red dashed vertical ticks indicate the wavelengths where we switch from using data from one MRS sub-band to another. Continued in Fig. 4.