If no one has exact data, you might easily test with a specific chemical titrimetric method, e.g. with a "zero grade" nitrogen purge of your O2 saturated sample (to maximize your signal) into pyrogallol (Orsat apparatus) solution (turns brown). Of course, appropriate blanks, saturation-method-testing-samples (i.e., did you saturate to a constant level => fully saturated) + standards (a slug of air into the supply) would need to be run, also.