What do the bars to the right of each move mean?

I'm sure this is a dumb question, but I've looked around the FAQs and such and can't find any information about what the bars on the right mean

I think it reflects the strength of the move or how good the move is.

I've never seen a screen like that before. It looks like the time taken to make the moves, but that would that Black pre moved 1...e5?? so I don't know about that theory. They do go up in multiples of 0.1 though so I don't have a better theory.

Edit: oh wait, Black sacrificed on f2 for no reason lol. Yeah, that's somebody who would pre move 1...e5. It's the time taken to move.

Yup. That's it. The new chess.com interface is taking a long time to grow on me...