A couple of days ago I came across an amazing flight data analysis program. Maybe I'm late to the party and everyone else knows about it but I've not seen it here so here goes.
The creator, Emarit Ranu, has put it in the public domain. It performs amazing things (have I mentioned that it is amazing?) with CSV files out of GRT, Garmin, Dynon and AFS hardware. It adds more amazing analytics to GRT log files. Go here: https://rv-14a.blogspot.com/2020/05/...-analysis.html and scroll thru the entire page for a review of most of its capabilities. I found a couple of bugs but a short email to Emarit resulted in a solution in minutes. I used to think I was a pretty capable user of Excel - I'll never say that again - promise.