This read-only Gauge32 reports the current best one-way time (BOWT), in milliseconds, in the send direction for this VPath. An admin uses this best-case latency figure to know the floor for how fast outbound traffic can reach the remote site, useful when troubleshooting latency-sensitive applications like VoIP. For example, a rising best one-way send time toward a branch, even as a best-case number, signals the underlying paths are all getting slower and real-time applications there will likely suffer.