Currently in the VO2 max report the scale appears to range from 0 to 66.
My VO2 max varies within a small range so I get a cycling and a running line that lie more or less on top of one another, and don't appear to vary much.
The report would be much more helpful if the plot was zoomed around the actual data, that is to say that y-axis auto-sizes to show a narrower range of values to highlight daily/weekly/monthly variations.