ΔP₁ as a function of modes period in the F5 case, for azimuthal numbers m = −1 (yellow), m = 0 (blue), and m = 1 (red). The ΔP₁ obtained from the Ω_⋆ = 0 GYRE run and the perturbative approach are represented as grey hexagons while the white crosses shows the ΔP₁ obtained for m = { − 1, 0, 1} with the 5 Ω_⊙ GYRE TAR run. The black crosses signal the ΔP₁ position for m = { − 1, 1} in the asymptotic approximation of the perturbative method. The measured uncertainties on period and ΔP₁ are represented. We show only fitted modes for which we are able to measure ΔP₁ with an uncertainty below 1.75 min.