On each chart, a formula defines the average; for example, at Switzerland, Run Split (y) = .67 * Bike Split (x), but with wide variation (higher r^2 = less variation). From there, examine the distribution of the squares; each represents a triathlete's actual performance. When you race, you'll want to be in either the lower left or upper right quadrants; those represent racers who balanced the run and bike well.
