Same as Fig. 4 but with the blue plots showing the results for embryos instead of the planetesimal disk. We use five embryos for each simulation and sum up the collision fraction. The upper panel shows the case with 1 M_⊕ embryos, and the lower panel shows the case with 0.1 M_⊕ embryos. For comparison, we also plot the results for the planetesimal disk with green lines. The initial inclination of the planetesimal disk is equal to the reduced hill radius of embryos.