Hello Samantha:
If you select one gcp and right click, you will see "info" option, that will list pixel errors for each projection.
I wonder if his is what you want. This will allow you to find images where projections (manual green or automated blue) are not-so-well placed. Be aware that this error may be a sign of bad orientation of a given photo where GCP pixel errors are high even they look well placed.
Best regards.
José MartÃnez