Separate measurement from explanation
A missed floor tells you where counts fall faster than your current review rule. It does not tell you whether the cause is targeting, message, page content, tracking loss, or audience intent.
Use comparable windows
Do not compare a full-month impression count with one day's backers. Keep the same attribution window and stage definitions for every channel row.
Do not rank channels on conversion alone
After finding the stage to inspect, use the Referral Performance Comparator to compare attributed economics and the Follower Growth Tracker to inspect acquisition pace.