Vintage Flashbulb Luminosity Conversion

Hi! I am conducting an experiment relating to the photometry of vintage flashbulbs (Sylvania, General Electric etc.). Some models included the lumen output on the package, but this is absent from older bulbs. Instead, they have the flash table that allows you to know what settings you should use for each aperture. Is there an effective way to convert this information to power output or illumination?

We also generally don't have much familiarity with vintage flash bulbs, so any tips/information/noteworthy parameters would be much appreciated :)