Please note that I avoided hit rate as concentration and hitrate are not the same thing. Concentration refurs to how tightly packed the claims are, hit rate is the the amount of claims you hit divided by the total probes spent.
One can have an exceedingly high hitrate even though the concentration of claims is smaller. What I have noticed is that the concentration of claims decreases as globals occur.
What I am hypothesising that is during peak times, the odds of more globals occuring which reduces the amount of claims availible on a server, and would also for people that do not notice the change in concentration, decrease their hitrate.
Any thoughts / comments