Median spectra of sources with PAH_{6.2 μm} EQW ≥ 0.4 μm, and PAH_{3.3 μm} EQW < 0.04 μm (green; seven objects) or 3.3 μm PAH EQW ≥ 0.04 μm (black; 79 objects). The ranges of the spectra are 1σ uncertainties of the estimated median values. The inset panel shows a zoom-in of the 2.5–5 μm region with the continuum fits in red. The orange arrows indicate the wavelengths where the AKARI continuum color, F_ν(4.3 μm)/F_ν(2.8 μm), is measured.