\begin{table}%Ta6
\caption{\label{tab:vzhya_tmin}
Times of primary (P) and secondary (S) minima for VZ~Hya.
O$-$C values are calculated for the
ephemeris given in Eq.~(\ref{eq:vzhya_eph}) adopting a circular orbit.
Observing methods are: PG photographic; V visual; PE photoelectric or CCD.
Times marked with an asterisk were published after we completed the
ephemeris calculations; including them makes no significant changes.}
\small%\centerline
{
\begin{tabular}{lllrllc} \hline
\hline\noalign{\smallskip}
HJD          & rms     &  rms     &   O$-$C     & Type& Observing& Reference  \\
$-$ 2~400~000& publ. &  adopt.  & days      &     &method&            \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
  21~925.8246 & 0.0008  &   0.0011 &    0.0018 &  P  &  PG & O32 ($T_0$) \\ 
  26~674.3410 & 0.0010  &   0.0120 &  $-0.0127$&  P  &  PG & G53 ($T_0$) \\ 
  27~856.412  &         &   0.0063 &    0.0081 &  P  &  V  & L49         \\ 
  29~604.794  &         &   0.0063 &    0.0014 &  P  &  V  & W46         \\ 
  29~700.634  &         &   0.0063 &  $-0.0006$&  P  &  V  & --           \\ 
  30~034.626  &         &   0.0063 &  $-0.0031$&  P  &  V  & --           \\ 
  39~926.673  &         &   0.0063 &  $-0.0027$&  P  &  V  & BA74        \\ 
  40~254.8602 & 0.0005  &   0.0007 &  $-0.0014$&  P  &  PE & W70         \\ 
  40~998.362  &         &   0.0028 &  $-0.0004$&  P  &  PE & PS75        \\ 
  41~033.212  &         &   0.0028 &  $-0.0020$&  P  &  PE & --           \\ 
  42~354.668  &         &   0.0063 &  $-0.0026$&  P  &  V  & B18(1974)   \\ 
  42~848.401  &         &   0.0063 &  $-0.0007$&  P  &  V  & B27(1976)   \\ 
  43~577.372  &         &   0.0063 &  $-0.0090$&  P  &  V  & B37(1978)   \\ 
  44~236.6532 &         &   0.0028 &  $-0.0040$&  P  &  PE & W82         \\ 
  47~971.5876*& 0.0003  &          &    0.0003 &  P  &  PE & SC07        \\ 
  48~267.8259 & 0.0001  &   0.0001 &  $-0.0001$&  P  &  PE & This paper  \\ 
  48~270.7303 & 0.0001  &   0.0001 &    0.0000 &  P  &  PE & --           \\ 
  48~273.6346 & 0.0001  &   0.0001 &    0.0001 &  P  &  PE & --           \\ 
  51~253.4340 &         &   0.0063 &  $-0.0125$&  P  &  V  & BAV122(1999)\\ 
  51~256.3520 &         &   0.0063 &    0.0012 &  P  &  V  & --           \\ 
  52~702.6936*& 0.0001  &          &    0.0012 &  P  &  PE & SC07        \\ 
  27~840.437  &         &   0.0063 &    0.0067 &  S  &  V  & L49         \\ 
  29~681.751  &         &   0.0063 &  $-0.0056$&  S  &  V  & W46         \\ 
  29~748.556  &         &   0.0063 &    0.0005 &  S  &  V  & --           \\ 
  30~015.742  &         &   0.0063 &  $-0.0091$&  S  &  V  & --           \\ 
  40~305.6848 & 0.0005  &   0.0015 &  $-0.0020$&  S  &  PE & W70         \\ 
  40~654.201  &         &   0.0028 &  $-0.0019$&  S  &  PE & PS75        \\ 
  40~686.154  &         &   0.0028 &    0.0038 &  S  &  PE & --           \\ 
  41~743.305  &         &   0.0063 &  $-0.0104$&  S  &  V  & B8(1973)    \\ 
  48~684.5934 & 0.0002  &   0.0006 &    0.0004 &  S  &  PE & This paper  \\ 
\hline
\end{tabular}}
%\smallskip
References are:
B = BBSAG Bulletin, followed by volume number and year of publication;
BA74 = Baldwin (\cite{ba74});
BAV = B.A.V. Mitt., followed by volume number and year of publication;
G53 = epoch given by Gaposchkin (\cite{gap53});
L49 = Lause (\cite{lause49});
O32 = epoch given by O'Connell (\cite{oconnell32});
PS75 = Padalia \& Srivastava (\cite{ps75});
SC07 = Smith \& Caton (\cite{sc07});
W46 = Wood (\cite{wood46});
W70 = redetermined from  $B$ and $V$ data by Walker (\cite{walker70});
W82 = Wolf et~al. (\cite{wolf82}).
\end{table}