Thank you so much for your reply – this makes a lot of sense! Just one quick follow up question: when you say “average of all the data points” how many data points are actually there in the Apple Health export you are analyzing? Is it something like one data point per minute?
In my case I was using a treadmill at a constant pace of 6.5 km/hr with incline 1.0. Unfortunately my Apple Watch is not well calibrated on the treadmill (any idea how to improve the calibration?) so the pace data is wrong and I just want to ignore it. Currently I am just using your app to get the average HR1 and HR2 and manually calculating my HR drift. In my previous example this was 2.17%, so I guess I can try increasing the pace or incline a little bit to get into the 4-5% range.
Regardless of the missing features, I still love your app and find a lot of value in it, so thank you very much for creating it! ?