RAFIG only works when your airflows all line up. To get them to line up, you need to adjust your IAC effective area. That's the reason that the table is there... so you can 'tune' the correlation between IAC and airflow. It allows you to correct for changes you make to airflow like when you crack the throttle blade... it's how you re-align your calculated IAC airflow to match the actual airflow.

You'll never get anything useful from RAFIG while the airflows don't line up.