χ² values of stellar models within 1σ (blue points) and 3σ (gray points) of the given target. Represented χ² values were calculated for the best-fit g-mode combination as listed in Table 2. Each figure shows the χ² distribution across all free parameters of the stellar model grid, i.e., initial mass (top left), age (top right), metallicity (bottom left), and overshooting (bottom right).