Échelle diagrams around ν_max for different targets sorted by increasingly large separations. The red squares indicate the observed peaks, selected with a height-to-background ratio above 6. Dark blue crosses indicate the expected location of the ℓ = 1 mixed modes strictly following the asymptotic expression; light blue diamonds are for ℓ = 2. Similarly to Fig. 1, crosses and diamonds indicate the mean spacing of the mixed modes only, not their exact location.