My 0.02 euro; did you get the results of all 15 probes in that short period? I use Magellan to get results and after a minute sometimes not all results are in. Magellan has two options in the latest version; a timeout to stop streaming results after for instance 30 seconds or stop after a specified number of results have been received.
I believe probes get instructions from controllers and ofcourse they don’t receive those all at the same time. Also probes might be busy I guess doing their default measurements (every 4 minutes). So it might take a while, I have seen results coming in after a couple of minutes.
Not sure the above is correct, just my thoughts.
Regards,
Ernst J. Oud