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Fig. 11.

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Wavelet analysis performed on the detrended R-band light curves. Top left: 100 day binning. Top right: 50 day binning. Middle left: 30 day binning. Middle right: 10 day binning. Bottom left: 7 day binning. Bottom right: 5 day binning. The top panels correspond to the time-frequency power spectra of each light curve. White contours represent variability signatures with a significance of > 3σ (> 99.73% confidence level). The gray grid represents the cone of influence region affected by edge effects. The bottom panels represent the averaged variance between 1 day and the corresponding binning. The horizontal dashed line represents the 3σ (99.73%) confidence level.

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