[mat-wg] Value of RIPEstat routing-history full-peers-seeing

The RIPEstat Data API for the Routing History call includes a key output field "full-peers-seeing". It is described this way: The number of RIS full-feed peers that saw this route. Often times the value is not a whole number. I'm wondering why that may be the case and how I should interpret it. Hopefully this is as good a place as any to ask the question and get an answer archived for posterity. Thanks in advance for any insight. John