\begin{table}%t1
\par
  \caption{\label{tab1}Wavelength comparison of different bands in SDSS and GOODS(ACS).}  
%\centering
\par
\tiny {
\begin{tabular}{ccccccc}   
\hline \hline  {Survey}& {--} & {$u$ band} & {$g$ band}& {$r$ band}& {$i$ band}& {$z$ band} \\ \hline
\noalign{\smallskip}
SDSS&--&3551 $\rm \mathring{A}$&4686 $\rm \mathring{A}$&6165 $\rm \mathring{A}$&7481 $\rm \mathring{A}$&8931 $\rm \mathring{A}$ \\  \hline
{--}& {$B$ band} & {$V$ band}& {$i$ band}& {$z$ band}& {--}& {--} \\  \hline
GOODS&4312 $\rm \mathring{A}$&5915 $\rm \mathring{A}$&7697 $\rm \mathring{A}$&9103 $\rm \mathring{A}$&--&-- \\  
{\it rest-frame}&2582 $\rm \mathring{A}$&3542 $\rm \mathring{A}$&4609 $\rm \mathring{A}$&5451 $\rm \mathring{A}$&--&-- \\ \hline 
\end{tabular}
}
\end{table}