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Fig. D.1.

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Results obtained by applying PCA to observations and using c, w,P20, and P30 (left panel), or only c, w (right panel), as input parameters. The colour scale represents the grade of relaxation of a system (with those rated 0 being the most relaxed systems, and those rated 3 being the most disturbed ones) defined by the visual classification (see Sect. 3).

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