A 'substantial deviation' means that your current order is more than 15% different from the order recommended by the Guidelines.

Subsequent observations revealed substantial deviations from the tables, leading Bouvard to hypothesize that an unknown body was perturbing the orbit through gravitational interaction.

That is, we need a more substantial deviation from the estimate in order to achieve our ambitious goal.

The inspection also uncovered substantial deviations from the Current Good Manufacturing Practice/Quality System regulation.

House rules can range from the tiniest of changes or additions to substantial deviations that alter the entire game play, depending on the imagination of the players.

But the election held substantial deviations from that one-person-one-vote benchmark.

Subsequent observations revealed substantial deviations from the tables, leading Bouvard to hypothesize some perturbing body.

Stevens found several substantial deviations, including:

This latest effort showed a substantial deviation in style from previous recordings, which can be attributed in part to Aaron Walters' contributions as a guitarist/writer.

(Though there are substantial deviations from this profile which we shall refer to below.)