\begin{table}%t4
\caption{\label{tab:S_sys}Mean and 68\% errors for SNIa internal parameters, for a flat $w$CDM~model. The values of $\theta_{1i}, i=0\ldots 7$ are in units of~0.01~mag.}
\par
%\centering
\small
\begin{tabular}{ll}
\hline\hline
Parameter	 & Best-fit-value	\\ 
\hline
%& \\[-8pt]
$-M$	 & $\rm 19.337^{+0.036}_{-0.041}$	\\ 
$\alpha$	 & $\rm 1.62^{+0.14}_{-0.15}$	\\ 
$-\beta$	 & $\rm -1.80^{+0.17}_{-0.16}$	\\ 
$\theta_{10}=\Delta{g}$	 & $\rm -0.06^{+0.99}_{-1.00}$	\\ 
$\theta_{11}=\Delta{r}$	 & $\rm 0.10^{+0.98}_{-0.96}$	\\ 
$\theta_{12}=\Delta{i}$	 & $\rm 0.09^{+0.95}_{-0.95}$	\\ 
$\theta_{13}=\Delta{z}$	 & $\rm -1.0^{+2.5}_{-2.5}$	\\ 
$\theta_{14}=\Delta{U}$	 & $\rm -0.05^{+0.98}_{-0.99}$	\\ 
$\theta_{15}=\Delta{B}$	 & $\rm -0.04^{+0.99}_{-0.98}$	\\ 
$\theta_{16}=\Delta{V}$	 & $\rm -0.06^{+0.98}_{-0.97}$	\\ 
$\theta_{17}=\Delta(B-V)_{\rm~Vega}$	 & $\rm -0.05^{+0.99}_{-1.01}$	\\[2pt] 
\hline
\end{tabular}
\end{table}