Understanding of the "Nearby Sites" chart

I have been running a new install for almost a week now and appreciate the charts showing my accumulated statistics. All of the charts refresh continuously, painting a picture of Aircraft and Positions reported - all EXCEPT the table showing other users within 10NM. This table seems to be locked at the totals displayed 4-5 days ago. I’m hoping someone can shed some light on why this chart is not updating? Or, perhaps I am misunderstanding what the table is supposed to be displaying?

These are 7 day median values, ie the 4th value of the values of the last seven days ordered by size. The current day is included.

That makes perfect sense. Thank you for explaining it.