Fig. 3

Frequency differences of radial modes between PM and UPM divided by νmax as a function of νPM/νmax (black solid line with dots). The green full line and the blue dashed line are least-square fittings with the Kjeldsen et al. (2008) power law, a(νPM/νmax)b in the range 0 <ν/νmax< 1.05 and in the whole range, respectively. The red line shows the modified Lorentzian, α [1−1/ { 1 + (νPM/νmax)β }].
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