Rotation measure scatter profiles (𝔖_RM) with distance to the nearest cluster only. The black line represents the observed scatter profile, which was computed using a fixed sliding window of N = 16 points. The gray shaded region represents its 68% confidence intervals obtained with bootstrapping resampling. The observational d_nrst values have been rescaled by a factor of ×0.8 to account for the difference in projected distance between the SLOW analog clusters and the real A3558-A3562. The colored regions are the SLOW 68% C.L. error regions (made with a sliding window of fixed size 0.01 r₅₀₀) for the RM maps that correspond to all amplification mechanisms of the magnetic field in the intercluster region.