This object captures the station timer's value from the sample just before the NotCopiedThreshold was reached, letting a manager pinpoint when the not-copied condition began, and it resets when a new condition becomes active. An administrator reads this timestamp together with cntFddiMACBaseNotCopies to establish the timing and scope of a buffer-congestion event. For example, knowing this baseline timestamp lets the admin cross-reference other system logs from that exact interval to find a concurrent cause, such as a CPU spike.