Example mass loss rate grid for a disk orbiting a 1 M_⊙ star subject to an irradiation of F_UV = 10³ G₀. The grid determines the gas mass loss as a function of the gas surface density Σ_g and radii r, using the FRIED grid from Haworth et al. (2018) and the implementation of Sellek et al. (2020). The solid white line, shows an example gas surface density profile, the dashed vertical line indicates the photoevaporative truncation radius r_phot, and the solid red line indicates the regions which are subject to external photoevaporation. The photoevaporation radius evolves with the simulation, and corresponds to the maximum of the mass loss rate along the current surface density profile.