Same as Fig. 5 but for PSRs J1513−2550, J1555−2908, J1628−3205, J1705−1903, J1731−1847 and J1959+2048. The median-fit function obtained from the analysis presented in Sect. 3.3 is shown in red. The light red zone represents the RMS of the timing residuals for orbital phases ϕ > 06.5, and the dashed vertical lines correspond to the values of Φ_start and Φ_end as inferred from the fit.