There are two straightforward explanations that are possible:
Here is the relevant help section to walk you through keywords using FireFox. (The process is nearly identical with Chrome):
It is a very simple procedure to change the monitoring interval. Here is a short video that shows how to change a 60 minute monitor to a 5 minute monitor in UXM.
This article was prompted due to an actual Customer Care case. A knowledge base article was created for this: