\begin{table}%T2
	%\centering
\par
	\caption{Apparent $R$ and $I$ magnitude of a type Ia supernova at maximum light  as function of redshift.}
	\label{tab:2}
	\begin{tabular}{l l l}
		\hline
		\hline
		$z$ & $mR$ & $mI$ \\
		\hline
		1.0 & 25 & 23.8 \\
		0.8 & 23.8 & 23.0 \\
		0.6 & 22.7 & 22.5 \\
		0.4 & 21.8 & 21.6 \\
		0.2 & 20.2 & 20.2 \\
		\hline
		\end{tabular}
\end{table}