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Fig. 6

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Relative differences (in %) between the theoretical σ and the measured ones as a function of Teff. The black filled circles correspond to the relative difference Dσ = (σ/σm)   z3 − 1 and the red open circles to the relative difference , where z3 (Eq. (19)) is the new theoretical scaling relation, c3 (Eq. (20)) is the classical one, and σm the measurements (see details in Appendix A.2).

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