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External hulls for arbitrary relative order tensors of varying relative orientation and principal order parameters for S1 of (3E–4, 5E–4, −8E–4) and S2 of (−3E–4, −7E–4, 1E–3) shown in first two rows. External hulls for S1 with principal order parameters of (3E–4, 5E–4, −8E–4),S2 of varying rhombicity, and Euler angles of (0,0,0) shown in last row.
