\begin{table}%Ta7
\caption{\label{tab:wzoph_tminp}
Times of $primary$ minima for WZ Oph.
O$-$C  values are calculated for the
ephemeris given in Eq.~(\ref{eq:wzoph_eph}) assuming 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}{lllrlc} \hline
\hline\noalign{\smallskip}
HJD          & rms     &  rms     &   O$-$C     &Observing& Reference  \\
$-$ 2~400~000& publ. &  adopt.  & days      &method   &            \\
\noalign{\smallskip}
\hline
\noalign{\smallskip}
  14~766.779  &         &   0.0340 &  $-0.0211$ &   PG & G38         \\ 
  16~402.534  &         &   0.0340 &  $-0.0172$ &   PG & --           \\ 
  16~678.62   &         &   0.0340 &  $-0.0427$ &   PG & --           \\ 
  16~975.67   &         &   0.0340 &  $-0.0217$ &   PG & --           \\ 
  17~707.813  &         &   0.0340 &    0.0076  &   PG & --           \\ 
  17~728.754  &         &   0.0340 &    0.0311  &   PG & --           \\ 
  18~523.56   &         &   0.0340 &  $-0.0292$ &   PG & --           \\ 
  19~531.77   &         &   0.0340 &  $-0.0443$ &   PG & --           \\ 
  20~778.51   &         &   0.0340 &    0.0106  &   PG & --           \\ 
  22~531.385  &         &   0.0110 &  $-0.0037$ &   V  &  L21        \\ 
  22~836.74   &         &   0.0340 &  $-0.0447$ &   PG &  G38        \\ 
  22~941.379  &         &   0.0110 &    0.0066  &   V  &  L21        \\ 
  22~962.303  &         &   0.0110 &    0.0131  &   V  &  --          \\ 
  23~284.431  &         &   0.0110 &    0.0111  &   V  &  L26        \\ 
  23~535.440  &         &   0.0110 &    0.0097  &   V  &  --          \\ 
  23~581.451  &         &   0.0110 &    0.0021  &   V  &  --          \\ 
  23~648.393  &         &   0.0110 &    0.0080  &   V  &  --          \\ 
  24~355.405  &         &   0.0110 &    0.0073  &   V  &  --          \\ 
  24~702.626  &         &   0.0340 &  $-0.0027$ &   PG &  G38        \\ 
  24~744.520  &         &   0.0340 &    0.0562  &   PG &  --          \\ 
  25~363.601  &         &   0.0340 &  $-0.0218$ &   PG &  --          \\ 
  25~384.477  &         &   0.0340 &  $-0.0634$ &   PG &  --          \\ 
  25~384.563  &         &   0.0340 &    0.0226  &   PG &  --          \\ 
  25~388.729  &         &   0.0110 &    0.0051  &   V  &  M29        \\ 
  27~250.410  & 0.004   &   0.0180 &    0.0256  &   V  &  D77        \\ 
  27~639.444  &         &   0.0110 &  $-0.0065$ &   V  &  L36        \\ 
  27~660.376  &         &   0.0110 &    0.0079  &   V  &  --          \\ 
  27~890.448  &         &   0.0110 &  $-0.0129$ &   V  &  --          \\ 
  27~961.570  &         &   0.0110 &  $-0.0106$ &   V  &  --          \\ 
  28~003.411  &         &   0.0110 &  $-0.0046$ &   V  &  --          \\ 
  28~455.228  &         &   0.0110 &  $-0.0064$ &   V  &  L38        \\ 
  28~555.627  &         &   0.0110 &  $-0.0115$ &   V  &  --          \\ 
  28~664.418  &         &   0.0110 &    0.0083  &   V  &  --          \\ 
  28~689.498  &         &   0.0110 &  $-0.0127$ &   V  &  --          \\ 
  28~819.172  &         &   0.0110 &  $-0.0274$ &   V  &  --          \\ 
  28~844.310  &         &   0.0110 &    0.0095  &   V  &  --          \\ 
  35~650.8670 & 0.0010  &   0.0028 &    0.0009  &   PE &  P65        \\ 
  40~859.331  &         &   0.0110 &  $-0.0011$ &   V  &  O121 (1970) \\ 
  41~135.427  &         &   0.0110 &  $-0.0165$ &   V  &  O126 (1971) \\ 
  46~243.508  &         &   0.0110 &    0.0027  &   V  &  B77 (1985)  \\ 
  47~381.420  &         &   0.0110 &    0.0008  &   V  &  BR30 (1992) \\ 
  47~724.471  &         &   0.0110 &    0.0043  &   V  &  BAV56 (1989)\\ 
  48~004.7536*& 0.0002  &          &  $-0.0081$ &  PE  &  SC07       \\ 
  48~042.420  &         &   0.0110 &    0.0068  &   V  &  B95 (1990)  \\ 
  48~088.453  &         &   0.0110 &    0.0212  &   V  &  B96 (1990)  \\ 
  48~372.9097 & 0.0004  &   0.0011 &  $-0.0006$ &   PE &  This paper \\ 
  48~452.3967 &         &   0.0003 &  $-0.0002$ &   PE &  BAA91 (1997)\\ 
  48~795.445  & 0.010   &   0.0280 &    0.0005  &   PE &  B102 (1992) \\ 
  48~883.3011 & 0.0008  &   0.0022 &    0.0030  &   PE &  B103 (1993) \\ 
  50~535.7849 & 0.0003  &   0.0008 &    0.0016  &   PE &  This paper \\ 
  52~054.396  &         &   0.0110 &  $-0.0003$ &   V  &  BAV143 (2001)\\
  52~100.411  &         &   0.0110 &  $-0.0039$ &   V  &  BAV154 (2002)\\
  53~476.7886*& 0.0001  &          &    0.0000  &  PE  &  SC07       \\ 
\hline
\end{tabular}}
\smallskip
References are:
B = BBSAG Bulletin, followed by volume number and year of publication;
BAA = BAA VSS Circ., followed by volume number and year of publication;
BAV = B.A.V. Mitt., followed by volume number and year of publication;
BR = Brno Contr., followed by volume number and year of publication;
G38 = Gaposchkin (\cite{gap38});
D77 = Dworak (\cite{d77});
H01 = Hipparcos 2001, unpublished;
H06 = H\"ubscher et~al. (\cite{h06});
L21 = Leiner (\cite{leiner21});
L26 = Leiner (\cite{leiner26});
L36 = Lause (\cite{lause36});
L38 = Lause (\cite{lause38});
M29 = McLaughlin (\cite{mcl29};
N05 = Nagai (\cite{n05});
O = Orion (Diethelm \& Locker \cite{dl70b},\cite{dl71c}),
followed by volume number and year of publication;
P36 = Prager (\cite{gul36});
P65 = Popper (\cite{dmp65}); determined by the present authors;
SC07 = Smith \& Caton (\cite{sc07}).
\end{table}