This read-only TruthValue flag reports whether the statistics collected for the current port-statistics sample entry are complete or only partial. An administrator monitoring traffic counters cares because a partial sample (for example, collection interrupted by a reboot or clock reset) can make the associated counter values look artificially low, so this flag tells them whether to trust the numbers at face value. For example, if a switch reloads mid-collection-window, polling this OID afterward would return true, warning the admin that the just-retrieved port counters for that entry cover less than the full sampling period.