I highly reccommend looking into your documentation before using these numbers just to be safe, but the following should be true for certain WB units.
AFR Voltage Cross refrence for any wideband running 0-5V and 10-20:1 AFR
Provided by
adjat84th
.39 V ~ 10.75 AFR
.47 V ~ 10.95 AFR
.63 V ~ 11.25 AFR
.71 V ~ 11.4 AFR
.78 V ~ 11.56 AFR
1.00 V ~ 12.0 AFR
1.25 V ~ 12.5 AFR
1.50 V ~ 13.0 AFR
1.75 V ~ 13.5 AFR
2.00 V ~ 14.0 AFR
2.25 V ~ 14.5 AFR
2.35 V ~ 14.7 AFR
2.50 V ~ 15.0 AFR
2.75 V ~ 15.5 AFR
3.00 V ~ 16.0 AFR