Gap opening time versus photoevaporation rate for the low-mass stars studied in this paper as well as the solar-mass star from Paper I (colour coded). Plotted are data points from our simulations, both from nominal (rightmost point of each line) and reduced photoevaporative mass loss rates with reduction factors of 2, 3-4, and 5, and a reciprocal fit through those points. The fit parameters for each stellar mass are listed in Table 4.