\begin{table}%T1
\par
\caption{\label{tab1}Rms line widths ({\it FWHM}) of the strongest emission lines,
their cross-correlation lags with respect to continuum variations, and the
derived central black
hole masses (see text for details).}
%\centering
\par
\begin{tabular}{lccc}
\hline \hline 
\noalign{\smallskip}
Line & {\it FWHM}(rms) & $\tau_{\rm cent}$ & $M$ \\
     & [km s$^{-1}$] & [days] & [$10^7~M_{\odot}$]\\
(1) & (2) & (3) & (4)\\ 
\noalign{\smallskip}
\hline
\noalign{\smallskip}
HeII$\lambda 4686$~ & 4444. $\pm$ 200 & $\rm 3.5^{+2.}_{-2.}$ & $\rm 2.25^{+1.63}_{-0.45}$\\
HeI$\lambda 5876$~  & 2404. $\pm$ 100 & $\rm 10.8^{+4.}_{-4.}$ & $\rm 1.81^{+1.36}_{-0.33}$\\
H$\beta$            & 1515. $\pm$ 100 & $\rm 23.5^{+4.}_{-4.}$ &  $\rm 1.63^{+0.33}_{-0.31}$\\
H$\alpha$           & 1315. $\pm$ 100 & $\rm 32.5^{+4.}_{-4.}$ & $\rm 1.64^{+0.33}_{-0.35}$ \\
\hline 
\end{tabular}
\end{table}