This is the byte-level counterpart to cktOutLostODEFrames, showing exactly how much data volume was lost from this circuit's optionally-discard-eligible traffic class, completing the byte-and-frame breakdown of loss by priority tier the admin uses to characterize a circuit's congestion behavior. For example, seeing a large value here on a circuit that otherwise shows minimal overall loss via cktOutLostFrames indicates the ODE class is absorbing essentially all of this circuit's congestion-driven loss.