Comparison between the Cepheids data and isochrones selected from the best values obtained from the Bayesian analysis. In each panel the red point with the error bars indicate the selected Cepheid; the grey points indicate the other stars. The error bars are plotted using 3σ. The blue isochrone represents the best-fitted values from the analysis; age and ω_i are indicated in Table 2. The black and orange lines are the most and less luminous isochrones within the CIs, respectively. The continuous lines indicate the mass within 3σ of the errors in Table 1; the dotted lines indicate the part of the isochrones with a mass that is outside the 3σ interval. To highlight the different evolutionary speed along isochrones, we plot black vertical markers at intervals of ΔM = 0.01 M_⊙.