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Fig. 5. Amplitude A1 (m) derived from a single frequency sine fit to the wingtip trace. 2A1 represents the peak-to-peak swing of the wingtip over a full wingbeat. There is no significant dependence of A1 on U. (ANOVA: A1=0.0009U+0.073; N=28, r2=0.06, P>0.05). For details see Table 2. Values are means ± S.E.M.