Where to see error improvement

[gmiller43]

We are attempting to bring online a detector in a fairly underserved region of the world.  As far as I know it would be at least 1000 miles from the nearest detector.  I'm interested in how this would affect the quality of measurement accuracy in the region.

Can someone point me in the direction of:

• Where (geographically) would you expect the greatest improvement of accuracy (closer to the new detector)?
  
• Is there an explicit measure of error that would be expected to improve and where in the dataset would I find that?
  

Thanks.