Distributions of f-mode frequencies as a function of the average density $\overline{M}/{\overline{R}}^3$. The upper colour map refers to the frequencies we obtain within the Cowling approximation, while the lower distribution is obtained by reversing the relation in Eq. (15) with the coefficients a_i from Pradhan et al. (2022). For comparison, the lines are the several fits listed in Tab-II of Pradhan et al. (2022). The three shaded regions contain the 68%, 95%, and 99% quantiles of the distribution.