\begin{table}%t1
\caption{O--C derived from photometry and spectroscopy of \hvezda.
$s$ denotes standard deviation in mmags.} \label{OCtab} %\centering
\par
\small
\begin{tabular}{rrlrcl}
\hline \hline %\rule{0pt}{1.07em}
Year~&
O--C [d] \hspace{3pt}
&$~s$&$N~$&Data&Source\\
 \hline
  1972 &   0.0580(70)  &  4.4  &  48 & $\it{UVB}$                     & \citet{winzer}\\
  1991 & $-0.0010(60)$ & 11    & 409 & $B_{{\rm T}}V_{{\rm T}}H\!p$ & \citet{esa97}\\
  1994 & $-0.0005(20)$ & $3.8$ & 317 &$uvby$                          & \citet{adela}\\
  1995 &   0.0005(18)  & $3.3$ & 299 &$uvby$                          & \citet{adela}\\
  2006 &   0.0341(24)  &       & 564 &$EW$                            & Lehmann et~al.\\
  2008 &   0.0000(17)  & $4.8$ & 940 &$\mathit{BV}$                   & this paper\\
\hline
\end{tabular}
\label{table}
\end{table}