Top panel – Average spectrum of the equivalent field of view of the SH map of the nuclear region of NGC 4945, as seen in the SL map. The SL2 order is shown with a dashed line. The most significant fine structure emission lines and PAH features in the SL wave range are labeled, in particular the ones that overlap with the SH waverange. Bottom panel – Average spectrum of the whole field of view of the SH map. The higher spectral resolution of the IRS/SH module allows emission lines to be distinguished such as [Ne V]14.32 μm and [Cl II]14.37 μm, otherwise blended in the IRS/SL module. These spectra are not corrected for extinction.