This read-only PerfCounter64 reports the minimum absolute round-trip (two-way) jitter, in microseconds, observed during the current measurement interval, per its description. An administrator uses this to see the best (lowest-jitter) sample recorded, useful context alongside the maximum and average when judging how stable delay was overall. For example, a minimum near zero alongside a very high maximum would tell an operator jitter is spiking intermittently rather than being consistently elevated.