\begin{table}%t1 \caption{Log of the UV observations of {\object CI Cyg}.} \label{obslog} \small %\centerline {\begin{tabular}[bottom]{lcccc} \hline\hline \noalign{\smallskip} Image No. & Date & MJD & Phase$^1$ & $T_{\rm exp}$ [s]\\ \noalign{\smallskip} \hline SWP~06818 & Dec. 11, 1979 & 44157 & 0.718 & ~5400\\ SWP~09256 & Jun. 6, 1980 & 44401 & 0.003 & 10~800 \\ SWP~13795 & Apr. 24, 1981 & 44719 & 0.375 & ~4800\\ SWP~14754 & Aug. 14, 1981 & 44831 & 0.506 & ~5400\\ SWP~18602 & Nov. 20, 1982 & 45294 & 0.046 & 40~800 \\ SWP~37047 & Sep. 17, 1989 & 47786 & 0.959 & ~6480 \\ SWP~45102 & Jul. 9, 1992 & 48812 & 0.159 & ~5400 \\ SWP~50760 & May 14, 1994 & 49486 & 0.946 & ~6300\\ SWP~51109 & Jun. 16, 1994 & 49520 & 0.986 & 23~640 \\ SWP~52838 & Nov. 20, 1994 & 49676 & 0.168 & 16~200 \\ SWP~54471 & Apr. 20, 1995 & 49827 & 0.345 & 21~600 \\ SWP~55894 & Sep. 10, 1995& 49970 & 0.513 & 18~000 \\ \hline Z1705107M & Oct. 11, 1993 & 49272 & 0.696 & 1795 \\ Z1705109T & Oct. 11, 1993 & 49272 & 0.696 & ~~707 \\ Z170510BT & Oct. 11, 1993 & 49272 & 0.696 & ~~816 \\ Z170510EM & Oct. 11, 1993 & 49272 & 0.696 & ~~816 \\ \noalign{\smallskip} \hline \end{tabular}} \noindent $^1$ Phase calculated from ${\rm Min}(m_{\rm pg}/B)={\rm JD}~2442687.1 + 855.6 \times E$ (Belczy{\'n}ski et~al. \cite{bel00}). \end{table}