Ray Gralak

I am trying to improve the 'resolution' of an APPM model by increasing the number of points.

How does APPM manage failed points when building a model?  APPM can fail to plate solve some points for any number of reasons, e.g. low altitude, obstruction, refraction, clouds, etc.  How many failed points can I have, say in a 200 point model, and still have a valid model? 

Thanks!

Bryan