Fig. 6

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Box and whiskers plots of the FF data sets split into the same periods of 3 years each. The box represents the interquartile range, which is the range containing the middle 50% of the data. It extends from Q1 to Q3. The horizontal line inside the box represents the median (50% percentile). The whiskers extend to the most extreme data points not considered outliers, while the outliers are plotted as points outside the whiskers.

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