Generated H₂O, ¹²CO₂, and ¹³CO₂ spectra for the grids with L_* = 0.2, 0.4, and 0.8 L_⊙. The spectra are shown for the models with no cavity (top row), a 1 AU cavity (middle row), and a 2 AU, 3 AU, or 4 AU cavity (cavity size at which the spectrum becomes CO₂-dominated, bottom row, left, middle, and right panels respectively). The vertical colored bars indicate the integration ranges for the H₂O 15.17 and 17.22 µm flux (blue), as well as the ¹²CO₂ and ¹³CO₂ Q-branches (green and purple respectively). Note that the scaling on the y-axis is different for each column.