This is a simple visual representation of how you fit into the range of adjustments possible on the bike.
The dot indicates where your setup fits within the bike's adjustable range.
Important: As long as the dot is inside the box, the bike fits you very well.
A dot squarely in the middle of the box indicates your setup requires minimal component changes on this bike, and has maximum adjustability for future position changes.
A higher dot position (i.e. towards top edge of the box) uses more spacers to achieve your fit.
Conversely a lower dot position uses fewer spacers to achieve your current position.
A dot position to the left of the box means a shorter stem will be needed to achieve the correct fit.
Conversely a dot towards the right of the box means a longer stem will be required to achieve your ideal position.