Residual spectra (solid curves) of the heated model atmospheres with parameters ℓ = 0.1, ℓ_a = 0.05, χ = 0.2, η = 0.75, and Ψ = 60° for two chemical compositions, pure helium (top panel) and solar abundance (bottom panel). The spectra of undisturbed atmospheres are shown by dashed curves. The best-fit diluted blackbody spectra to the residual spectra are shown by the dotted curves, and the blackbodies of the effective temperatures are shown by the pink dash-dotted curves.