I do this for remote tuning customers who can't find a pre-defined wideband that matches the one they have.
Input your voltages and correlated AFR from your wideband's install instructions / documentation and it spits the transfer function out in AFR and EQ ratio.
Capture.PNG
https://www.dropbox.com/scl/fi/mffjt...d75mjuw0l&dl=0
On a side note.. If your vehicle supports it I suggest the AEM OBD2 CAN wideband 30-0334