2D normalized distribution of magnetic field orientation angles for E₂ (panel a) together with the marginal distributions of ϕ and θ in light gray in panels b and c. Black lines indicate the median values of the marginal distributions. The white line in panel a corresponds to a 60° threshold angle (see the text for more details), and in panels b and c we overlay in light blue the distribution of the points outside this line. The blue lines indicate the median values of these truncated blue distributions.