Temperature as a function of radius within the 70% emitting region of the H₂O 17_7,10−16_4,13 (6371 K), 11_3,9−10_0,10 (2438 K), and 8_3,6−7_0,7 (1447 K) lines (solid red, pink, and blue lines) for the model using the chemical network (left panel) and the model with parameterized abundances (right panel). The shaded regions represent the minimum and maximum temperature within the emitting region. The red, pink, and blue crosses represent the retrieved T and R_eq from the single-temperature slab fits in the 10–14, 13.5–17.5, and 21–24 μm regions. The white plus symbols represent the retrieved T and R_eq values from the three-temperature-component MCMC routine for H₂O.