XP range ?

So,does any of you know the maximum range at which you still receive xp in a party ?
I'm power leveling some noobs and i wanted to know how far away i can get from them so they won't lose xp.
I saw that even if the party picture is deep blue they still get xp.
So,does any of you know ?
Is it like 70m like the dances and tambours ?

100 meters since the european update.
This means pservers have 70 meters of exp range.
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cool :D thanks a lot