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Fig. 2

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The distribution of the wavelet power of the LOS velocity in the range 4.7–6.7 mHz in the chromosphere of NOAA 810 observed in Hα. Left panel: time-spatial dynamics of the 3-min oscillations. Central panel: profile of the time-averaged spatial distribution of the wavelet power. Right panel: the profile of the intensity observed in the continuum. The vertical dashed lines indicate the umbra-penumbra boundary.

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