[atlas] Questions about paris traceroute

Hi all,

I would like to start some Paris-traceroute measurements from RIPE Atlas
probes,
with a specific frequency and a control over the paris id.

In particular, I am wondering if it is possible to start a traceroute
measurement with all the 16 paris id at the same time. Because so far, I
only
find out how to start periodically a traceroute with a different paris id.

I am also a little bit confused about the interval between two measurements.
In the doc, it is written that the default value (900s) is the minimum,
but when I create a UDM, the minimum interval seems to be 60s.
I also tried 10 secondes with Restful API and the measurement
started, but the real interval seems to be far upper than 10s.
Can you give me more informations about this interval ?

Thank you for your help,

Thomas.
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