o–H₂ 2.12 µm versus [OI] 0.63 µm line luminosities. The dark grey points with error bars show the observations from Gangi et al. (2020, 2021), and the light-grey points show observational data collected from the literature (see Appendix D for details). The orange symbols show the photoevaporative disk-wind models (inclination i = 40°) with varying accretion luminosities (lowest(highest) line luminosities are for the lowest(highest) accretion luminosity). The square symbols are for the models with reduced dust-to-gas mass ratio in the wind. The brown diamonds are the results from the DIANA project (PRODIMO models without a wind component). We mark DG Tau as an example of a target that likely cannot be modelled with a pure photoevaporative wind. We also mark the two independent observations for GM Aur (see Appendix D).