Representative long glitch coincidences in a PSB pair. See description in Fig. 21. Events above 50σ are selected if they match the long glitch template. All events (without selections) are included below 50σ, since the long glitch population dominates at low amplitudes. The solid line indicates identical signal in both the PSB-a and PSB-b. Most (if not all) long events in PSB-a are associated with significant events in PSB-b, and a large fraction have approximately the same amplitude in PSB-a and PSB-b.