We ran into this issue because the value you see when hovering over an interface graph is different than the value in the report. Support gave us a link to
which contains this bit of information:
"This is because in tooltip/popup (that is common component used on multiple places in NPM), the value is divided by 1000 when converted from bits to Kbits, but on resource it is divided by 1024."
This seems like something that could easily be fixed in an NPM upgrade. Is there a reason the 1000 is used instead of 1024? We asked support but they did not know.