Extended Data Fig. 1. YKA waveform changes for all events.

The event pair indices key to Supplementary Data Table 2. Color indicates whether the PKIKP waveform changes between the two events in each earthquake pair. Red is similar, green is somewhat similar, blue is different, and gray is either too noisy or data is unavailable. The gray rectangles outline the multiplets with more than two events. The dotted lines mark the latitudes separating clusters of repeaters.