This counter reports the total bytes of ingress traffic on this PM instance that were accepted as in-profile -- conforming to the service's committed rate -- during today's still-accumulating 24-hour window. This is the figure that represents legitimate, fully-forwarded revenue traffic for this service over today's still-open 24-hour bucket, so comparing it against the port's configured committed rate for that same span tells you how close to its contracted capacity the service is actually running. For instance, a service provisioned for a 10 Mbps CIR that accumulates close to the theoretical maximum accepted-byte count for today's still-open 24-hour bucket is running essentially at its committed ceiling, worth flagging before a customer calls in about slowness.