Relative differences of the Rosseland radiative opacity coefficients (Δκ_R/κ_R) computed by adopting the AS05 and GN93 (left panel), AS05 and GS98 (central panel), and AS05 and AS09 (right panel) solar mixtures, for Z = 0.0129 and Y = 0.274. The three panels also show the region covered by the entire convective envelope of masses in the range 0.6−1.2 M_⊙ (thick-dashed box), for the same chemical composition of the opacity tables and adopting the mixing length value α = 1.00.