Midplane radial ice mass fraction f_ice of the dust-to-gas ratio parameter exploration for the chemically reset (left column) and chemically inherited (right column) reference CPDs. The black dotted, dashed, and solid lines indicate the radial position of Europa, Ganymede, and Callisto. The white dotted, dashed, and solid lines indicate where f_ice is equivalent to the estimated ice mass fraction of Europa (0.05), Ganymede (0.48), and Callisto (0.52).