\begin{table}%t3
%\centering
\par
\caption{Doppler shifts and line widths (\kms) of SUMER region S2 and blinker C4.}
\begin{tabular}{lcccccc}
\hline\hline
Region velocities& \multicolumn{3}{c}{Whole region}& \multicolumn{3}{c}{\hspace*{-3mm}Wing enhancements}\\
(\kms) & {\it t1} & {\it t2} & {\it t3} & {\it t1} & {\it t2} & {\it t3}\\
\hline
S2 (Doppler shift)& 2.7 & 0.4 & --2.3 & $\times$ & $\times$ & $\times$\\
S2 (Line width)& 19.5 & 19.6 & 18.8 & $\times$ & $\times$ & $\times$\\
C4 (Doppler shift) & 7.6 & 8.8 & 4.1 & $\times$ & $\times$ & $\times$\\
C4 (Line width)& 30.5 & 32.0 & 32.1 & $\times$ & $\times$ & $\times$\\
\hline
\end{tabular}
\label{blink_vels1}
\end{table}