I have been working on and “evolving” a excel sheet for almost 3 years now, and what better place to share then the forums. Maybe if any of you are interested i could pass the file and you could use to track your observations. But be warned I’ve spent so many hours fiddling with formulas changing things updating the data constantly. Its quite a bit of work but none the less this is my data as of 5/14/2020. Hopefully somebody will find it interesting.
Release 1 OUTDATED but here if you want
Release 2 (updated)