Scatter in EVPA as a function of A_turb. For each value of A_turb, 10⁵ realizations of B_tot are computed. The Stokes parameters are computed and polarization position angles determined and compared to the polarization vector corresponding to the regular component only. The standard deviation of the polarization angle difference is then computed and plotted against A_turb We carry the analysis for , 30° and 60°.