Open Manage Network Manager Top Interface Bandwidth

I have a 1GB link between 2 sites. On one side the link goes into a Force 10 (10GB port) and the other side goes into a 4032f 10GB port. The speed displays as 1GB in Open Manage which is correct.

My question is on the Top Interface Bandwidth within Dell OpenManage Network Manager, lets say it shows as 10% for this port (either side). Is that 10% of 10GB or 10% of 1GB. Obviously if it was 10% of 10GB, the link would be at maximum. My true figures are circa 6-7% daily.