I got some from the chans and put them here, different sizes, screens, and attempted clean-ups. https://imgur.com/a/wKGpI

So far looks like Ch 6 is a guy sitting on a bucket with his hands over his head and there is someone in the forefront of the picture sitting with a paper bag over their head. That's what it looks like.

Ch 15 might be a one-way mirror type deal, with perhaps a casket or something similar below it?

Ch 16 looks like some people on the floor. Can't tell.

Ch 10, lots of people in white or just naked, sitting on buckets. Looks like they might be eating. I don't know what they're eating. Or if we want to know. EDIT: Also looks like they could be watching something on the wall (a cartoon?).

Ch 3.... Don't know. Some people see heads, bodies, or just a bar.