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Fig. 3

image

Similar to Fig. 1, but showing models with different ⟨3D⟩ averages. The geometrically averaged model, z (solid black line), is identical to the model shown in Fig. 1 (black solid line). Inward of a depth of roughly 0.1 Mm, the averages of the upflows, ⟨3D⟩up, are the lowest curves, while the downflows, ⟨3D⟩dn, are the uppermost curves in all three panels.

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