When my car was tuned previously, the tuner used the following values for the IFR
0 7.7656
5 7.7891
10 7.8438
etc

Using the spread sheet listed here I get:

0 8.7295
5 8.7839
10 8.8380

I plugged those numbers in and according to the gauge the AFR went Real lean, I switched it back.
Which set of numbers would be considered correct? Is it wrong to put an incorrect number in the IFR tables and tune around it? I understand that changing the flow rate would change the AFR, but if my commanded AFR is matching my gauge with the original numbers, does that mean those numbers are correct?