Median profile of the magnetic field components derived with an SEA using first the MC data in [ − R₀,  R₀] with B_z(R₀)=0 (black), second in the in situ FR [ − R_inf,  R_inf] (blue), and third in the non-eroded FR [ − R_sup,  R_sup]. The in- and outbound profiles are drawn with continuous and dashed lines, respectively. The columns show three different samples: (a) the set Q_1, 2; (b) a subset of Q_1, 2 with a low impact parameter (|p|≤0.3); and (c) a subset of Q_1, 2, Q_best, with a symmetric magnetic field profile (|C_B|≤0.05) and a low impact parameter (|p|≤0.3).