This counter records the average bit rate of rate-limited traffic received at this flow point during the archived historical interval. A historical review tells the admin whether the flow point's rate-limiting was actively constraining a customer's traffic during a specific past period, versus traffic simply staying under the cap. For example, if a customer's speed complaint concerns a specific day last week, the admin would check that day's cmFlowPointHistoryABRRLRx to see if the rate limit was actually being hit.