However I still need to figure out (I am sure it is in the documentation, I just didn't get around to looking for the relevant parts yet) how to access the raw data for recent measurements to see whether that data not being displayed in the graphs was due to the collected data somehow not getting to the Atlas infrastructure for some reason (despite probe being considered up), or whether there was just an issue displaying the collected data.
Ok, getting the current raw data was of course much easier than I thought: No need to study the documentation, just to have a fresh look at the probe UI :-) Now with a first quick glance at the data of one built-in measurement, it seems that data was received by the Atlas infrastructure e.g. for Tue, 8 Jan 2013 20:17:43 UTC. Still need to check further whether there is also data for the other measurements, and whether that data is valid. But it seems there was just a glitch in rendering the data. Kind regards, Joachim