Comparison of the pulsation period of the sample between observations and estimations from the simulations where M_★ = 1.5 M_⊙. Top panel: pulsation period, P_obs, in logarithmic scale versus the parallax uncertainty of the observed sample, the blue curve being the Eq. (9) inferred from the analysis of the 1.5 M_⊙ simulations. The colours represent the relative difference between the pulsation period calculated from Eq. (9) and with the observations. Bottom panel: histogram of these relative differences. The red line accounts for the cumulative number of stars in the respective and preceding bins (see right-hand Y-axis).