\begin{table}%t1
  \caption{Parameter values for the seven cosmological models investigated in this work.}
  %\begin{center}
\par
    \label{tab:par}
    \begin{tabular}{ccccccc}
      \hline\hline\noalign{\smallskip}
      Model & $\Omega_{{\rm m},0}$ & $\Omega_{{\rm x},0}$ & $\bar{\Omega}_{{\rm x,sf}}$ 
      & $h$ & $w_{{\rm x},0}$ & 
      $\sigma_8$\\
      \hline
      %\hline
      EDE1 & $0.330$ & $0.670$ & $0.040$ & $0.670$ & $-0.928$ & $0.820$ \\
      EDE2 & $0.360$ & $0.640$ & $0.040$ & $0.620$ & $-0.997$ & $0.780$ \\
      EDE3 & $0.284$ & $0.716$ & $0.033$ & $0.686$ & $-0.942$ & $0.715$ \\
      EDE4 & $0.282$ & $0.718$ & $0.048$ & $0.684$ & $-0.935$ & $0.655$ \\
      K08 & $0.279$ & $0.721$ & $-$ & $0.701$ & $-1$ & $0.817$ \\
      $w_{\rm x} = -0.8$ & $0.279$ & $0.721$ & $-$ & $0.701$ & $-0.800$ & $0.817$ \\
      $\Lambda$CDM & $0.279$ & $0.721$ & $-$ & $0.701$ & $-1$ & $0.817$ \\
      \hline
    \end{tabular}
  %\end{center}
\par
\end{table}