Baseline-subtracted spectrum (black) and best-fit LTE model (shaded red) for B1-c in the 8.2-12.5 µm range. At the bottom of each panel, the individual best-fit LTE models of rovibrational H₂O (yellow), CH₄ (red), CS (green), and NH₃ (purple) are shown at an arbitrary constant offset. Deep negative absorption features originating from detector artifacts are clipped for clarity. Between 10-12 µm, some features of NH₃ are over or under reproduced, but the S/N at these wavelengths is low due to the strong absorption by the silicate and H₂O ice libration bands.