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(A) 3D extensional model and (B) 3D bipolar model dependence of κ and τ parameters with ϑmax. The range of best values for both κ and τ lies at much shorter angles in the 3D extension model (A) than the 2D model (see Fig 5D), which in turn has a range of optimal values slightly lower than in the 3D convergence model (B).
