This reports the smallest variation in round-trip time observed between consecutive ping replies during a test run, measured in microseconds. Network admins use it alongside the maximum and average jitter values to understand how consistent a path's latency is, since even short bursts of jitter can degrade real-time traffic like voice or video. A low value, say 50 microseconds, on a link carrying VoIP traffic would indicate a stable path unlikely to cause audible call quality issues.