Left panels: contour maps at 95% (solid) and 50% (dashed) of the maximum of power spectral density for Model A in solid-body rotation (top), Model B in solid-body rotation (middle), and Model A in differential rotation (bottom). Colours are indicative of the type of modes (ℓ,m) on which was applied the method. Red dots indicates the input value of ν_rot and 1/P₀ as measured from the models, when relevant. Right panels: example of stretched period échelle diagrams for prograde modes, which are plotted twice for clarity.