Lowest gas price to get a trasnaction done in 24 hours?

I need to make a hundred or so transactions and they aren't time-sensitive. I'm happy for them to take a day or two. Obviously I want to spend as little on gas as possible, but can't find any data for the last week on transactions taking 24 hours or more.

Anyone know the lowest gas price I can use to get them through in a couple days and not just be stuck in the mempool?