Fig. 5
Upper panel: number of pixels versus ∇Bpil for three Auni ranges: Auni > 0.1 (solid line), 0.01 < Auni < 0.1 (dashed line), and Auni < 0.01 (dotted line). The vertical lines represent the corresponding ∇Bpil averages. Lower panel: same for three Duni ranges: Duni < 3 Mm (solid line), 3 < Duni < 40 Mm (dashed line), Duni > 40 Mm (dotted line).
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