Probability distributions for the present-day ﹩{Q}_{\star }^{{\prime} }﹩ for WASP-50, computed under the assumption of a frequency-independent ﹩{Q}_{\star }^{{\prime} }﹩ (solid), and the frequency-dependent prescription for ﹩{Q}_{\star }^{{\prime} }﹩ found in Section 3 (dashed). The constraints are similar, supporting the claim that our results are reliable even though they were derived under the assumption that ﹩{Q}_{\star }^{{\prime} }\,=﹩ constant for each system.