Observed 𝔖_RM(d_nrst) profile (black line). The gray shaded region is the 68% C.L. error region. The blue crosses represent the amplitude of the RRMs of the on-target region, while the horizontal line is σ_{off − target}. The arrow-shaped data point corresponds to an outlier value of ∼230 rad/m². The vertical line is set at 0.7 r₅₀₀, which is the scale at which overlapping effects start to take place. The horizontal segment at the lower left corner represents the median window size of ∼0.3 r₅₀₀. The vertical purple error bar (lower right corner) indicates the median on-target δRRM = 4.6 rad/m².