Graph View Question

[feleven]

When I import data from my Polar S625X HRM, and view the data in the iSMARTtrain Data Graph view, I see an entry in the bottom right corner "VO2 (%/Max ml.min): 55.0%/2925".

What does this mean? I know what VO2Max is, and that its related to MaxHR, but I can't figure out what this information is trying to tell me.

Thanks for any help!
Rod