Fig. 7
Parameters β (exponent, top panel) and A (amplitude, bottom panel) as obtained from least squares fitting of SS3 with the model of Eq. (11). The straight-line fits to the values of β and A are given by Eqs. (12) and (13). β = 1 would represent a linear relation between SS1 and SS3. β − 1 therefore expresses the degree of non-linearity.
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