This is the average value over the current performance-monitoring interval of the propagation delay measured on the ODU (optical channel data unit) signal traversing this port, expressed in microseconds. The average delay over the interval is the figure typically reported to a customer as the link's steady-state latency performance. For example, an admin responding to an SLA dispute would pull oduDelayAvg for the disputed period to show whether the contracted latency figure was actually met.