Google and search function exhausted. Perhaps I'm not using the right terms.

I was looking for something that shows critical power to FTP equivalency. There is a lot out there that mentions CP60 is FTP. However, I was interested in other CP points. For example, CP30 is clearly not 200% of FTP (more like 105%?). How about CP1, CP5 or CP180? Is there a formula that one could apply?

Thanks!

Mr. Burns