There was an overall trend of decreasing \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\langle \dot{\epsilon }\rangle$$\end{document} ⟨ ε ̇ ⟩ with increasing number of taps (Fig. 4 ).
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