Mass-radius sequences for compact stars as solutions of the TOV equations for m₀ = 700 MeV, for αb₀ = 350 MeV (upper left), αb₀ = 350 MeV (upper right), αb₀ = 400 MeV (lower left), αb₀ = 450 MeV (lower right). The circles show the coexistence of the chirally broken and chirally restored phases. The onsets of up and down quarks are marked by pentagons and diamonds, respectively. We note that, in the upper-left figure, for χ = 0.2, the onset of up and down quarks is almost simultaneous. The inner (outer) gray band shows the 68.3% (95.4%) credibility regions for the mass of PSR J0740+6620 (Cromartie et al. 2019). The inner (outer) green and purple bands show 50% (90%) credibility regions obtained from the recent GW170817 (Abbott et al. 2018) event for the low- and high-mass posteriors. The inner (outer) black region corresponds to the mass and radius constraint at 68.2% (95.4%) obtained for PSR J0030+0451 by the group analyzing NICER X-ray data (Miller et al. 2019).