\begin{table}%t1
\par
      \caption{Journal of observations. Phases $\phi$ refer to the ephemeris of WR20a \citep{rau07}.\label{journ}}
              %\centering
\par
         \begin{tabular}{lccc}
            \hline\hline
Name &  Start time & End time & $\phi$ \\
            \hline
Obs 1 & 2003/08/23, 18:21:23 & 2003/08/24, 04:53:56 & 0.34--0.46 \\
Obs 2 & 2006/09/05, 15:52:01 & 2006/09/06, 06:29:22 & 0.28--0.44 \\
Obs 3 & 2006/09/28, 05:46:20 & 2006/09/28, 20:14:43 & 0.41--0.57 \\
            \hline
         \end{tabular}
   \end{table}