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Fig. 13

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Frequency averages of the fractional difference in mode amplitude, background power, mode width, and mode energy of flaring ARs, from top to bottom, as a function of flare-activity index. Mode parameters are corrected for foreshortening, duty cycle and magnetic-activity. Red and magenta symbols correspond to ARs flare(s) of magnitude (m) > X3 and X1 ≤ m ≤ X3, respectively. The solid lines show the linear regression, and the dashed curves correspond to the 95% confidence level of the linear fit. (This figure is available in color in electronic form.)

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