UNs IPCC Reports https://www.ipcc.ch/site/assets/uploads/2018/03/Chapter-5-Hydropower-1.pdf See fig 5.15. The outliers are the concern (and yes, it’s pretty much methane)

Edit: I reread the parent comment, the above won’t address what you asked for, but is interesting nonetheless so I’ll leave it

F that noise. I’m here and active because Sync came out, and I’ve become used to its interface over the years. I’ll eventually try the other FLOSS apps but I’m here learning and enjoying first.

Same thing on mastodon, most posts are about Twitter and how they hate it. Really annoying and not the reason I want to use the service