Polarization angle dispersion as a function of the inclination angle γ. The dashed purple line represents the values extracted using the circular standard deviation of the polarization distributions, the dashed green line using the Gaussian fits, and the dashed red line using the HH09 method. The green point at γ = 0° is off the scale at value δθ ≈ (150 ± 140)°. The gray shaded region corresponds to values of δθ that exceed 40°. The employment of the dispersion angle methods becomes questionable under such considerable spreads, because of the π ambiguity in δθ, which limits the dynamic range of the observable.