JEB -- Rosén et al. 207 (24): 4255 Figure IG10

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Fig. 10. The downstroke fraction ${tau}$ of the wingbeat cycle versus flight speed, U (m s^–1). (ANOVA: ${tau}$ =–0.011U+0.55; N=28, r²=0.31, P<0.005). Values are means ± S.E.M.