\begin{table} %t11
\caption{\label{tab11}The wavelength intervals for the
H$\alpha$ and H$\beta$ wings and cores.}
\small%\centering
\par
\begin{tabular}{lll}
\hline\hline
Component       &Integration   &Integration\\
                &interval      &interval   \\
                &in~\AA\       &in~km~s$^{-1}$  \\
\hline
 H$\alpha$ blue wing   &6486--6552     &(--4510)--(--1503)\\
 H$\alpha$ core        &6553--6616     &(--1458)--(+1402)\\
 H$\alpha$ red wing    &6617--6684     &(+1458)--(+4510)\\
 H$\beta$ blue wing   &4804--4853     &(--4493)--(--1479)\\
 H$\beta$ core        &4854--4900     &(--1417)--(+1412)\\
 H$\beta$ red wing    &4901--4950     &(+1474)--(+4488)\\
\hline
\end{tabular} 
\end{table}