There is a large discrepancy between the max values displayed in a “bits” graph of peering + transit port group compared to adding up all max values displayed in a “bits separate” graph of the same port group. This was noticed when the “bits” graph totals were over 20Gbps lower than expected.
bits graph max values, in + out: 178.25Gbps
bits separate graph max values added up manually, in + out: 208.34Gbps
Bits graph followed by bits separate: