Dominant period maps of the photospheric (left) and chromospheric (middle) DS oscillations and the respective histograms (right). The contours on the maps represent turning heights 600, 1000 (black curves), and 1600 km (white curves) from τ5000 = 1. The histograms are calculated for both maps, using 30 s bins for the period, for the pixels of the large rosette where the turning height ranges from 0−600 km (solid line), 600−1000 km (dotted line), and 1000−1600 km (dashed line).
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