\begin{table}%t1 \caption{\label{tab1}Approximate values of ellipticity derived for the STEREO loops observed by \cite{ASCetal2008b}.} %\centering \small \begin{tabular}{ l c c c c } \hline \hline & Curvature & \multicolumn{2}{ c }{Circularity ratio} & Ellipticity \\ & radius (Mm) & &\\ loop number & $r_{\rm curv}$ & $C_{\rm min}$ & $C_{\rm max}$ & $\epsilon$ \\ \hline 1 & 17.0 & 0.92 & 1.11 & 0.56 \\ 2 & 19.4 & 0.97 & 1.19 & 0.58 \\ 3 & 30.5 & 0.90 & 1.12 & 0.60 \\ 4 & 30.9 & 0.96 & 1.11 & 0.50 \\ 5 & 30.6 & 0.78 & 1.20 & 0.76 \\ 6 & 38.3 & 0.96 & 1.12 & 0.52 \\ 7 & 50.2 & 0.87 & 1.30 & 0.74 \\ \hline \end{tabular} \end{table}