The graph shows that the flatter asymmetrics, which fly closer to the boat, are best at tight angles, while fuller sails that lift and fly out away from the boat are better at the wider angles. The graph shows some other interesting points:
     There is a trade-off between pointing and power. Flatter sails can be carried at narrower angles, but ultimately they don't develop as much driving power as the deeper sails.     Any sail produces greater power when eased slightly from its closest possible angle of trim. At wider angles the performance falls off gradually. At narrower angles the performance falls off quickly, particularly in the flatter sails.
     Generally, most sailors will benefit from our All Purpose shape, which is a compromise between the flattest and fullest shapes.