I could not find this anywhere, and had to reach out to Glowshift tech support do get it, so I thought I would post it here. Here is their data logging reference chart.

AFR formula for E0 gasoline (V/0.5) + 10

AFR formula for lambda (V/7.42942) + 0.686

If you do the math, you will see these formulas are "close enough", They do not give the same result as what is listed on the chart.

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