Comparison between the observations and models with Z = 0.020, mixing length α = 2, and exponential overshooting f_ov = 0.02. The mass is between 1.4 and 2.2 solar masses, with steps of 0.1 solar masses. The red box shows the observed region (T_eff = 7371 ± 150 K, log L/L_⊙ = 0.97 ± 0.02), and the color shows the goodness-of-fit for the fundamental mode (f₁, top) and asymptotic spacing (Π₀, bottom), which are proportional to exp[−(f_1, cal − f₁)²] and exp[−(Π_0, cal − Π₀)²], where f_1, cal and Π_0, cal are the model-derived fundamental mode and asymptotic spacing.