Nice work on building a much better aerobic engine. Just look at one number and you will see what I mean. In 2021 13km/hr gave a LA reading of 3.4 mMol/L and a HR of 157. This 2022 test shows that at 13km/hr your LA= 2.4 mMol/L at the same HR=158. This means that at this relatively fast pace you are using much more the aerobic metabolic pathway and not so much the glycolytic path. You should be extremely pleased and continue with the same training. There is more improvement to come.

Scott