Monitor: Web Application (Real Browser) - location question

Monitor: Web Application (Real Browser) - location question

Hi,
I'm currently on a free account for evaluation purposes and set up a "Web Application (Real Browser)" with two locations 1. Frankfurt (Primary) and 2. Munich

When checking the log report for that monitor it appears that the main location Frankfurt reports for every check (~6-7minutes) but the 2nd location Munich only appears ever ~30minutes/5th check.

Why is the 2nd location not reporting for every regular check? Is this a limitation because of the trial account?

Thank you in advance!