\begin{table}%t2
\caption{\label{tab:syspar}List of SNIa systematic parameters and their symbols.}
%\centering
\small
\begin{tabular}{ccl}
\hline\hline
$M$     & & \\ 
$\alpha$ & $\theta_{22}$   & Light-curve parameters \\
$\beta$ & $\theta_{23}$   & \\ 
\hline
$\Delta g$ & $\theta_{10}$ & \\
$\Delta r$ & $\theta_{11}$ & \\
$\Delta i$ & $\theta_{12}$ & \\ 
$\Delta z$ & $\theta_{13}$ & Zero-point shifts \\
$\Delta U$ & $\theta_{14}$ & \\ 
$\Delta B$ &   $\theta_{15}$  & \\
$\Delta V$ & $\theta_{16}$ & \\
$\Delta(B-R)_{\rm Vega}$   & $\theta_{17}$ \\[2pt] 
\hline
\end{tabular}
\end{table}