Any idea how these are determined? I am asking because they seem to have modified over time for me. For example, 2 weeks ago, a 96 RMSSD reading (I use an H10 and EliteHRV, as I don't have Garmin) resulted in a green dot for the HRV. Today I took it as I woke up, and for a 103.64 entry I got an orange dot. I thought that maybe the website is showing you lower scores if you go too much into the parasympathetic recovery zone, like how EliteHRV is doing with lowering readiness if your scores are "too good" compared to recent baseline. But no, actually manually increasing the value to test that field resulted in another green dot at 105.90, below that, orange. So the values shifted over maybe just 1-2 weeks of training.
Unsure that should happen? I suspect that taking a day off influenced the algorithm? Or small increases in VO2max estimations result in expectation of a higher HRV?