\begin{table}%t1
%\centering
\par
\caption{Calculated and  EBIT (beam energy 6.9~keV) \ion{Fe}{xxv}~ratios.}
\label{EBIT_Table}
\begin{tabular}{ccccc}
\hline \hline
  % after \\: \hline or \cline{col1-col2} \cline{col3-col4} ...
  Ratio & This paper & Bely-Dubau et~al.$^a$ & Zhang \& Sampson$^b$ & EBIT\\
  \hline
  $I(x)/I(w)$ & 0.198 & 0.19 & 0.210 & $0.18\pm 0.03$  \\
  $I(y)/I(w)$ & 0.215 & 0.20 & 0.211 & $0.25\pm 0.04$ \\
  $I(z)/I(w)$ & 0.248 & 0.23 & 0.237 & $0.24\pm 0.06$ \\
  \hline
$^a$~\cite{bel82a}.\\
$^b$~\cite{zha87}.\\
\end{tabular}
\end{table}