Optical depth profiles of the silicate features for LEDA 1712304 (red) and the other AGNs (gray; Stierwalt et al. 2013; Imanishi et al. 2007; Imanishi 2009; Roussel et al. 2006; Wu et al. 2010). Top right, top, left, and bottom panels: optical depth profiles of the AGNs in the IR luminosity ranges of 10¹²–10¹³ L_⊙, 10¹¹–10¹² L_⊙, and 10¹⁰–10¹¹ L_⊙, respectively. Each optical depth profile is obtained by the absorption-free power-law continuum determined from the flux densities at 7.1 μm and 14.2 μm (Imanishi et al. 2007). The dashed lines show the positions of PAH 7.7, 8.6, and 11.3μm, H₂ S(3) 9.66μm, and [S IV] 10.5μm.