So I want to transfer fit coordinates from a retul report to my tri-bike (fit was performed out of town on a fit bike).

Anybody know what exactly the "handlebar reach" number represents? It says "bb to center of bar". Does that mean the center of the clamp where the stem attaches to the basebar? Or center of the grippable area on the horn of the basebar? Or halfway between the center of the stem clamp and the end of the grippable area? Or something else altogether?