Figure 1

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Dependence of the shock wave candidate counts (left vertical axis in all the panels) on the relative changes in the SW N, ΔN (a); V, ΔV (b); and IMF, ΔB (c). The red vertical lines represent the selected thresholds for identifying the shock waves: 0.35, 0.05, and 0.30 for ΔN, ΔV, and ΔB, respectively.

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