The samples of the store's waits (WalkStore.waits) and of the node's connection pool over the measured window: how often each wait was seen, and the pool's most connections in use and most callers waiting for one.
The walk over the measured window: the aggregates it stamped between the window's first and last sample, and their rate. A walk that completed within the window stamped no more after it, so its rate is a lower bound.