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. 2015 Feb 27;10(2):e0118399. doi: 10.1371/journal.pone.0118399

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© 2015 Tan et al

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Fig 4 — The amplitude AP ₀ of ΔP(t) at different time windows T ₁ and T ₂ for (a) 200 individual stocks in the NYSE and (b) 200 individual stocks in the SSE. T ₁ ranges from 1 day to 44 days, and the increment is 1 day. T ₂ is from 45 to 250 days, with an increment of 5 days. The larger AP ₀ is, the more significantly ΔP(t) differs from zero. For ΔP(t) fluctuating around zero, AP ₀ = 0.