Current rate, in bytes per second, at which low-drop-precedence traffic is being RED-dropped from the same per-queue counters as jnxCosQstatTable, but in jnxCosInvQstatTable, which is indexed queue-number-first and then by interface so one queue number can be compared across every interface under tri-color marking. (Juniper's own DESCRIPTION text for this counter says "TCP bytes", but that wording is copy-pasted from the TCP-specific byte counters above it in the same table; by object name and table position this is the tri-color drop-precedence counter, which is not protocol-specific.)