IR spectra of COMs not contributing to the global fit, but with absorption features in the range between 6.8 and 8.6 µm. These spectra are scaled to the IRAS 2A spectrum (black) to derive upper limit column densities. The vertical dotted lines are colour-coded and indicate the features used to derive the ice column densities. A small horizontal shift in the vertical lines is used to distinguish the bands at 7.3 µm.