Mass vs. semi-major axis plot comparing all simulated planets to the known exoplanet population. The plot is in all aspects the same as Fig. 3, except that the simulated planets are colored to reflect the gas lifetime t_disk of the disk in which they formed instead of the α viscosity parameter. Simulated planets with t_disk < 2 Myr, t_disk between 2 and 5 Myr, and t_disk ≥ 5 Myr are shown as colored dots in blue, turquoise and pink, respectively. It is apparent that the dependence of the final orbital parameters on the disk lifetime t_disk is small compared to the dependence on the viscosity parameter α (see Fig. 3).