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Fig. 12.
Nonlinear component 
of the displacement of chip 2 in time derived with approaches 1–4 listed in Table 2, and their average ⟨H⟩ (thick solid line) for the long-duration datasets (Δt = 7 yr), and 
corresponding to ⟨H⟩ for the short-duration (Δt = 1.5 yr) and medium-duration (Δt = 3 yr) datasets.
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