\begin{table}%t1
\par
%\begin{minipage}{170mm}
\caption{\label{t1}Summary of the posterior distribution mean values for the different sets of parameters constrained, with the corresponding 68\% confidence intervals.}
%\centerline
{
\small\begin{tabular}{c c c c c l}
\hline\hline
Parameter & Vanilla & Vanilla + $ \Omega_k$ & Vanilla + $w$ & Vanilla + $\Omega_{\rm k} + w$  & Parameter Definition
\\
\hline
$ \Ob h^2$     &  $ 0.0227\pm 0.0005$  &   $0.0227\pm0.0006$   & $0.0228\pm0.0006$      & $0.0227\pm0.0005$ 	        & Normalised baryon matter density times $h^2$   \\
$           \Omega_{\rm c} h^2$      &$0.112\pm0.003 $                     &  $0.109\pm0.005$            & $0.109\pm0.005$      & $0.109\pm0.005$	        &Normalised CDM density times $h^2$\\
$                 \theta$      &$ 1.042\pm0.003$                       &  $1.042\pm0.003$            & $1.042\pm0.003$	    & $1.042\pm0.003$	 	&Ratio of sound horizon to angular diameter distance\\
$                 \tau$      &$ 0.085\pm0.017$                       &  $0.088\pm0.017$            & $0.087\pm0.017$	    & $0.088\pm0.017$	        &Reionization optical depth\\
$             n_{\rm s}$      &$0.963\pm0.012$                             &  $0.964\pm0.013$            & $0.967\pm0.014$	    & $0.964\pm0.014$	        &Primordial spectral index at $k=0.05~\rm Mpc^{-1}$\\
$                        \log(10^{10} A_{\rm s})$      &$3.07\pm0.04$        &  $3.06\pm0.04$            & $3.06\pm0.04$	    & $3.06\pm0.04$	        &$A_{\rm s}$ is the primordial scalar power at $k=0.05~\rm Mpc^{-1}$ \\
$                       \Omega_{\rm k}$      &$ 0$                         &  $-0.005\pm0.007$            &  $ 0 $	    & $-0.005\pm0.0121$	        &Spatial curvature   \\
$                        w$      &$ -1 $                             &  $ -1$            &  $-0.965\pm0.056$	    & $-1.003\pm0.102$	        &Dark energy EoS ($w=p_\Lambda/\rho_\Lambda$)\\
\hline
%\multicolumn{4}{|l|}{Derived  parameters:}&\\
%cline{1-5}
$                      \Ol$      &$ 0.738\pm0.015                $   &  $0.735\pm0.016$           & $0.739\pm0.014$      & $0.733\pm0.020$		&Dark energy density ($h^{-2}\rho_{\Lambda}$)\\
$                      {\rm Age}       $      &$  13.7\pm0.1$              &  $13.9\pm0.4$            & $13.7\pm0.1$	    & $13.9\pm0.6$	        &Age of the universe in Gyr\\
$                      \Om$      &$ 0.262\pm0.015$                   &  $0.270\pm0.019$            & $0.261\pm0.020$	    & $0.272\pm0.029$		&Normalised matter density\\
$                    \sigma_8$      &$0.806\pm0.023$                 &  $0.791\pm0.030$            & $0.816\pm0.014$      & $0.788\pm0.042$		&Matter density fluctuation amplitude \\
$                   z_{\rm re}$      &$10.9\pm1.4$                       &  $11.0\pm1.5$            & $11.0\pm1.5$	    & $11.0\pm1.4$		&Reionization redshift\\
$                    h $      &$ 0.716\pm0.014$                      &  $0.699\pm0.028$            & $0.713\pm0.015$	    & $0.698\pm0.037$		&Hubble parameter\\
\\
\hline
\end{tabular}}
%\end{minipage}
\end{table}