\begin{table}%t3
\par
\caption{Summary of the RXTE observations of \rxs1708.}
\label{tab:rxsrxteobs}
\small%\centerline
$$
\begin{tabular}{l l@{ }l l@{--} l@{ }l l r@{.}l}
\hline
\hline
Obs. ID. &
\multicolumn{6}{c}{Time span} &
\multicolumn{2}{c}{$t_{{\rm PCA}}$}\\
\hline
ALL   & Jan.&12, &1998 & Nov. &16, &2006 & 606&512 \\
Set A & Jan.&12, &1998 & Oct. &26, &2003 & 310&480 \\
Set B & Nov.& 1, &2003 & Nov. &16, &2006 & 296&032 \\
\noalign{\smallskip}
\multicolumn{8}{c}{{Set A}}\\
30125 & Jan.&12, &1998 & Jan. &08, &1999 & 59&896 \\
40083 & Feb.&6,  &1999 & Mar. &11, &2000 & 52&568 \\
50082 & Apr.&21, &2000 & May  &12, &2001 & 34&576 \\
60069 & May &6,  &2001 & Feb. &20, &2002 & 24&544 \\
60412 & May &20, &2001 & May. &23, &2001 &  9&928 \\
70094 & Apr.&2,  &2002 & Mar. &20, &2003 & 55&600 \\
80098 & Apr.&16, &2003 & Oct. &26, &2003 & 73&368 \\
\noalign{\smallskip}
\multicolumn{8}{c}{{Set B}}\\
80098 & Nov.&1,  &2003 & Feb. &23, &2004 & 26&416 \\
90076 & Feb.&28, &2004 & Feb. &28, &2005 &126&784 \\
91070 & Mar.&6,  &2005 & Feb. &25, &2006 & 79&000 \\
92006 & Mar.&5,  &2006 & Nov. &16, &2006 & 63&832 \\
\hline
\end{tabular}$$
\smallskip
  The following information is given: the observation IDs,
time spans of the observations in calendar dates, PCA exposure times
for PCU-2 in units ks.
\end{table}