Fig. A.4.

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Detections of far-side active regions on October 15, 2013 (12:00 TAI). Panel (a): Composite EUV maps at 304 Åfrom Liewer et al. (2017; four-day averages). The detected active regions are enclosed in the red boxes. Panel (b): Seismic far-side images from this work (three-day averages). For reference, the red boxes are copied from panel (a). Panel (c): Same as panel b but for holographic far-side maps from JSOC/Stanford (five-day averages). Panel (d): Same as panel b but for time–distance far-side maps from Zhao et al. (2019; four-day averages).
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