One big problem there is no dates attached to the individual points
44.8 14.9 1.11
For example, this entry is a little unusual.
One of his highest HGB/HCT and the absolute highest ret%
With a date to correlate what he was doing at that time (say an altitude training camp) maybe there is an explanation
If it happened to be in the middle of a race, then there is a different explanation.
This entry
38.7 13.1 0.96
Lowest HGB/HCT and middle ret%
Was is during/towards the end of a GT ? If so then its perfectly plausible.
If its during a different time period, again there could be a different explanations.