They are not.
The A/F ratio column on that sheet is derived from the data gathered from the air and fuel flow turbines.
If you look at the air flow column, the data is flatlined at about 283cfm.
That is obviously erroneous data.
So, any data that’s relying on the air flow numbers will also be erroneous.
On that sheet, that’s the air flow, a/f ratio, and VE