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Fig. 5.


Relative deviations, True − Fitted/True × 100%, of doubly exponential and change throughout for consistency disc models as a function of z0 and ze (ze = 300 pc orange, 100 pc violet, and 20 pc pink), fitted by a z0 = 0 model, assuming the correct Re. The yellow region determines the 1σ uncertainty from the z0 fit from 1.8 MeV data alone, see Sect. 3. By definition, the z0 = 0 case yields a relative deviation of zero.

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