\begin{table}%t1
\caption {Coronal seismology using $P_{1}/2P_{2}$: scale heights. \label{tab:form}
%Using the analytical results
%in Eq.~(\ref{eq:big_app}) for the exponential case, combined with the loop
%oscillation observations for cases C, D and E \citep{verwichte2004,tvd2007}, we
%deduce the scale $\Lambda_{\rm c}$ of longitudinal density variation in the loops.
%We also include results from numerical solution of dispersion relations
%(\ref{eq:thin_even_dr}) and (\ref{eq:thin_odd_dr}). Also shown is the associated
%scale $H_{\rm c}=2\Lambda_{\rm c}/\pi$ of longitudinal variation in a semi-circular loop.
}
%\centering
\par
\begin{tabular}{cccccc}
\hline\hline
Case & $P_{1}/2P_{2}$ & Analytical $\Lambda_{\rm c}$ (Mm) & Numerical $\Lambda_{\rm c}$
(Mm) & Analytical $H_{\rm c}$ (Mm) & Numerical $H_{\rm c}$ (Mm)\\\hline 
C & $0.91\pm0.04$ & $117\pm98$ & $121\pm97$ & $75\pm62$ & $77\pm62$\\ 
D & $0.79\pm0.03$ & $49\pm9$ & $48\pm9$ & $31\pm6$ & $31\pm7$\\ 
E & $0.90\pm0.03$ & $192\pm68$ & $182\pm68$ & $122\pm43$ & $116\pm43$\\\hline
\end{tabular}
\end{table}