esaProbeStatsMinOnewayR2PDelay is an unsigned 32-bit value that reports the lowest recorded one-way delay, in microseconds, from the reflector back to the probe, for the interval that is still being actively collected (the live bin). Because this figure isolates delay from the reflector back to the probe only, it lets a technician tell whether a latency problem is one-sided rather than assuming the whole round trip is equally at fault. For example, if this minimum one-way delay from the reflector back to the probe holds steady at its usual floor while spikes show up elsewhere in the same live bin, the technician watching the dashboard right now can conclude the path itself is healthy and the spikes are transient.