Comparison of Q and Q/ρ for the four stars (each row) and five opacity approaches: ODF (black solid line), grey opacity computed with Eq. (C.1; grey solid line), and the binned opacities for four bins (red solid line), 15 bins (yellow solid line), and 24 bins (black dotted line) corresponding to Cols. 5.1, 5.3a and 5.3b in Table 4. Left column: Q for the deeper part of the atmosphere where mainly cooling occurs. Second column: Q/ρ for the same part of the atmosphere. Third column: Q for the higher layers where the heating occurs. Right column: Q/ρ for the same part of the atmosphere.