Simple representation for "under the condition that"?
I'm writing a academic paper, and would like to represent "under the condition that" more simply.
In (very redundant) representation, what I'd like to say is:
> We determined the observation points under the condition that the
> distances between every two observation points are approximately 500
> meter.
Is the following representation correct?
> We determined the observations points for the distance of each of them to be approximately 500 meter.
Mmm, I don't feel it sounds correct... Please help.