\begin{table}%t3
\caption{\label{jouphot2}Published all-sky \ubv\ observations with unknown epoch.}
%%\centering

\small
\begin{tabular}{ccccl}
\hline\hline\noalign{\smallskip}
JD$-$&$V$&\bv&\ub& Source\\
2~400~000     &   &   &     \\
\noalign{\smallskip}\hline\noalign{\smallskip}
     ?      &4.62 &$-0.08$ &$-0.49$ &\citet{craw71}\\
     ?      &4.55 &$-0.06$ &  --  &\citet{bou59}\\
35960--36260&  -- &$-0.064$&$-0.505$&\citet{belya60}\\
35450--36300&4.60 &$-0.07$ &$-0.51$ &\cite{mend58}\\
37300--37840&4.59 &$-0.079$&$-0.495$&\cite{craw63}\\
38516--39095&4.45 &$-0.058$&   -- &\citet{hagg66}\\
\noalign{\smallskip}\hline\noalign{\smallskip}
\end{tabular}
\tablefoot{Whenever possible, we estimated at least a range of Julian dates within which the particular observations were secured.}
\end{table}