It depends on the Hubs and the combination of Hubs. Some will bring in quite a bit in one day. Others won't (and will bring in barely anything, if that, in a day). The person with lots of "the right kind" of Hub (with the right title, keywords, etc.) would do better than I do. (I have a lot of the wrong kind kind of Hubs, and there are a lot of things I can't take the time to do; or else can't be bothered doing.) You can't go by other people. You can only go by your own Hubs (and each individual Hub is going to be different earnings-wise too).