\begin{table}%t1
%\centering
\par
\caption{\label{table1}Start time and velocity of eruption fronts.}
\begin{tabular}{l c c c c c c c c}
\hline\hline
\noalign{\smallskip}
 Fronts\tablefootmark{1}&QS\_J\_171 & QS\_K\_171 & QS\_304 & PR\_Y\_304 & PR\_Z\_304 & CH\_M\_171 & CH\_N\_171 & CH\_304 \\
\hline
time (min) & 23& 32 & 32 & 15& 25 & 126 & 126 & 158\\
vel. (\kms)& 28 & 9 & 55& $-14$ & 12 & 12 & -- & 55 \\
    \hline
\end{tabular}
\tablefoot{
\tablefoottext{1}{The names are made up of QS (Quiet Sun), {PR (Prominence)} or CH (Coronal Hole) followed by the arrow letter and then the wavelength.}}
\end{table}