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Fig. 4. The magnitudes (means ± S.E.M., N=60-80) of U and
W wake flows, and the magnitude and direction (relative to the
x-axis) of V flows as a function of individual (A). Ratio of
U/total wake flow as a function of individual (B). Symbols represent
means ± S.E.M. (error bars are smaller than the symbols),
N=60-80. Freestream flow has been subtracted from U. U, V
and W are flow velocities in the downstream (x), vertical
(y) and lateral (z) directions, respectively.