@mfuller From the other thread, you mentioned possibly wanting to do your own measurements with a raspberry pi but lack the experience to do that – do you have one already? The reason I ask is that I have one also, and I don’t mind what device I use to measure. If we both have a common device, I’m open to writing code (should I find the time) that works for both of us to see if we can measure this and maybe find some correlating data more quickly.