Find experiments using the same instruments, and you can compare raw numbers, sometimes. But, to get a general idea: just look at the values they got across th

Find experiments using the same instruments, and you can compare raw numbers, sometimes. But, to get a general idea: just look at the values they got across their population, remove any extreme outliers, and put it next to some chart using units you want to convert to. Make sure they are on the same scale (i. e. linear or log). The mean and other quantiles should correspond. Or, depending on what you're looking for, just eyeballing fig. 1 (https://www.medrxiv.org/content/medrxiv/early/2021/06/24/2021.06.21.21258528/F1.large.jpg https://www.medrxiv.org/content/medrxiv/early/2021/06/24/202...) itself might be enough. It shows (little surprise) that the bulk of measurements cluster in "safe" territory. That asignificant number of people show stronger reactions than that bulk, by sometimes orders of magnitude, but don't derive (much/yet) additional protection from it. And that a number of individuals show a weak response and are at risk, without that group being distinct from the rest in any specific way. Rather, it's a continuum