Fit of the MIR spectra using the PAHTAT procedure (Pilleri et al. 2012b) at the same positions as in Fig. 2, assuming the mixed extinction model and R_V = 3.1. The black line shows the observed spectrum, the red line is the fitted spectrum, the blue line represents the continuum, green, orange, light-green and light-blue show the PAH⁰, PAH⁺, PAH^x, and eVSG components.