At the moment, looking at a history of alarms is difficult to piece together when all the events associated with an alarm occur as all of these are reported on individual rows (e.g. for active, acked, cleared).
It would be far simpler if unique alarm events only displayed on a single row, with the associated events simply adding to the same row in different columns (e.g. Ack Time, Cleared Time). What would also be good is to show the time to ack and time to clear as the time it took from first activation to be ackd/cleared.