Same as Fig. 2, but for the model frequencies computed with TDC for PM. Top: black lines are for different values of the TDC free parameter β. The real part of β are ranged from 0.4 to 2.0, while the imaginary part from −2.0 to 2.0 at 0.4 intervals. The red line is for β = 0.2–1.2i, which gives the smallest deviation from the observed frequencies. Bottom: comparison of the case of β = 0.2–1.2i with GGM and RGM for PM.