The history collection database. The history table contains a point by point rolling history of the most recent RTT operations for each conceptual RTT control row. The rolling history of this information is maintained in a series of 'live(s)', each containing a series of 'bucket(s)', each 'bucket' contains a series of 'sample(s)'. Each conceptual history row can have lives. A life is defined by the rttMonCtrlOperRttLife object. A new life will be created when rttMonCtrlOperState transitions 'active'. When the number of lives become greater than rttMonHistoryAdminNumLives the oldest life will be discarded and a new life will be created by incrementing the index. The path exploration RTT operation will be kept as an entry in this table.