Shows, how many days calculatively passed on average between visits.
Calculation: "URM - Customer Profile Days since First Contact" / "URM - Customer Profile Visits" * 100
A user made 10 visits. The first visit was 100 days ago.
The value for "URM - Customer Profile Visit Frequency Avg. (Days)" is 10.
Please note, that the use of this metric over time is usually not useful, as there is no time reference.