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Fig. 4.
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Spatially averaged WPS of the intensity signals for the FoV the NOAA 12353 taken at (a) 1700 Å, (b) 1600 Å, and 304 Å. This figure is to be compared with the results presented in Fig. 3. We identified strong oscillation powers between 3.0−8.0 h for (c) 304 Å.
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