Quadrant Analysis tells you how you created your power, since the same number of watts can be created by different combinations of force and pedal velocity.
It helps to give you an understanding of the muscular and cardiovascular demands created by each ride. It can also help you determine if in training you are creating wattage in the same quadrants that you would in a race and adjust your training as necessary.
The four quadrants represent the following combinations of force and pedal velocity.
Quadrant 1 (upper right): high force and high cadence.
Quadrant 2 (upper left): high force and low cadence.
Quadrant 3 (lower left): low force and low cadence.
Quadrant 4 (lower right): low force and high cadence.