I just went back to the "adjusting air fuel with O2 sensor and voltmeter" tech article and have been looking into WB vs NB O2 monitoring and am wondering;

Is the NB reading accurate enough to adjust fuel pressure?

Here's a chart I found:

Gauge READING FULL THROTTLE AIR/FUEL RATIO
.000 17.0:1
.100 17.0:1
.200 16.0:1
.300 15.5:1
.400 15.0:1
.500 14.7.0:1
.600 Dangerously Lean 14.6:1
.700 Getting lean 14.5:1
.800 Max power(Lean) normally aspirated 14.2:1
.875 Max Power normally aspirated 13.5:1
.900 Max Power (Rich) (NOS,blower,Turbo) 13.2:1
1.000 Very Rich 12.5:1

I have an accurate, fast acting voltmeter and am getting readings in the high "700's" at full throttle. It appears I'm running a bit lean according to the chart above.

Will using this be good enough to get me in ball park?