there are TOO many variables in a survey of GPW to be useful without an extremely large set of survey data.
don't mean to be a downer just being realistic.
the photosynthesis chart you were referring to was done monitoring individual leafs for O2 production with controlled consistent conditions and only the variables in question being varied.
is that GPW in a 4x4 or a 5x5 ?
is that 2 months or 4 months total grow time ?
what strains ?
with or without supplemental CO2?
dwc, ebb & flow, soil ?
harvest for flowers or harvest for oil ?
KIND led, BML leds, or COB leds ?
...... etc.