Top panels: SED for disks with different values of H/R in the family of models 5. The reference radius used is 10 AU, and H/R is set to be the same for the outer and the inner disk. The cyan color shows the allowed range of H/R consistent with the SED. Central panel: flux of the [O i] line at 63 μm as a function of H/R for surface density exponents q of the inner disk ranging from −0.4 to +0.6 (see legend) for a gas-to-dust ratio of the outer disk equal to 4. The dashed lines show the line flux for different gas-to-dust ratios of the outer disk for a constant inner disk surface density exponent q = 0.2. Bottom panels: expected CO P(10) profiles for different values of the gas-to-dust ratio in the outer disk for the family of models 5 assuming H/R = 0.11 and q = 0.2. The number in the top right corner of each panel is the CO P(10) line flux in W m^-2. The star represents the values of Model 5 in Table 4 and Fig. 6. The best combined fit of the [O i] 63 μm line flux and the CO P(10) line profile is given by gas-to-dust ratios below 10 in the outer disk.