Radial profiles of selected quantities. From top to bottom, the figure shows the rest-mass density ρ; the radial solutions of the eigenfrequencies η_r for the highest three modes found, indicating the corresponding frequencies (values in the legends are in units of hertz and use the same colors as those in Fig. 6); the Lamb L and Brunt–Väisälä N frequencies as well as the Y_e; and the speed of sound cs at three different times (see Fig. 6), corresponding to the hadronic evolution at 2.7 ms, the transition when quark matter appears at 5 ms, and at late times which is around 15 ms of simulation time. The vertical lines in the density plots (top panels) mark the locations of the outer boundary condition ρ_outer (dashed line) and the location for the onset of the quark matter core R_quark (solid line).