Inversions of the Γ₁ profile as a function of normalised radius determined from solar data assuming SAHA-S v7 as the EOS and changing the ratios of individual elements in the table (from MB22 to AAG21). Two reference models were used in the procedure: models M1 and A2. The results of the reconstructions are plotted in various colours. The red curve overplots the light blue one, and the purple curve overplots the green one. Each symbol depicts the Γ₁ inversion results for the associated model (M1 or A2).