[atlas] probe selection criteria on "WW" measurements

Hi, I have two questions regarding probe selection for UDMs.

When I specify for example that I want to run an ongoing measurement on
250 probes in the "WW" region, will these probes remain the same
throughout the lifecycle of the measurement (unlimited) or will these be
somehow randomized every time the measurement is run?

Secondly, I am wondering about even spread of probe location in doing
such a measurement. For instance I am as much interested in results from
regions that have only a few probes, as I am interested in results from
those regions that are better served. When I look at the results so far
of a test measurement, it appears that I'm receiving results from 35
probes in US, but only 3 from FI and none from NO. The latter surprises
me a bit since there are 100 probes reported in NO, so why aren't there
any results from those coming back?

While I understand that countries with more probes will likely yield
more results, I am wondering if there is any method to get a better
"country-balanced" result for measurements ran in "WW".

Thanks,

	~paul

-- 
Paul Vlaar
DNS Infrastructure Group
Afilias

e-mail: pvlaar at afilias.info
phone: +1-416-673-4078
mobile: +31-6-506-306-35
mobile USA: +1-602-410-4148