Its impossible to predict the future.  Most pools but ,Nicehash that is actual payout as your mining,  are just best guesses.  Things like PPLN payout that split coins found by the last N shifts means you have no idea what your going to make this hour until way in the future.  That is why places like www.poolpicker.eu is just showing how a pool finished the last day out.  Doesn't matter how much you pay for a service, unless they have a time machine, can't give you more than a best guess.