Yeah, I read something about using an endoscope. I was trying to use the drone so I wouldn't have to spend hours up there myself. Since the data is reported in 15min increments, I'd have to cover each panel for 30min. For 24 tiles that's 11.5 hours (don't have to do the last one). Ain't nobody got time for that! I'm not looking forward to climbing on my fragile clay tile roof, but it seems the endoscope might be the only way.
Do you happen to have a picture of where exactly I should be looking, and what it looks like when I find it?