Spitzer/IRS mid-IR spectra for the sample of LLAGN obtained from the CASSIS database (Lebouteiller et al. 2011, 2015), including both the low- and the high-resolution modules. The main nebular and molecular gas lines are indicated, except for the [Si II]_34.8 line which typically exceeds the flux range shown in the figure. The objects are sorted by increasing Eddington rate (λ_Edd; see Table 1). In the case of NGC 1097, the continuum in the long-high module (dotted line) has been scaled to match the short-high module at 19 μm, due to contamination from the star forming ring in this galaxy.