\begin{table}%t3
%%\centering
\par
\caption{Delays observed between the various ground stations and IJD (as defined by the VILSPA 2 
ground station). A positive delay indicates that for a given OBT, the IJD derived using the ground 
station in reference is smaller than it should be. A mean value and its uncertainty is provided for all periods during 
which the delays varied significantly. This means that values without reported errors are more accurate than
the others.}
\label{delay}
\begin{tabular}{llr}
\hline\hline
Ground Station       & Period& Delay\\
                                  &(UTC)              & ($\mu{\rm s}$)\\
\hline
ESA Redu&before 2003-02-26 14:05&$-110\pm 10$\\
ESA Redu&2003-02-26 14:05 to 05-12 15:28&$-15\pm20$\\
ESA Redu&2003-05-12 15:28 to 05-15 15:25&$-105\pm10$\\
ESA Redu&2003-05-15 15:25 to 05-21 15:14&$0\pm5$\\
ESA Redu&2003-05-21 07:15 to 07-03 14:23&$74\pm5$\\
ESA VILSPA 2&before 2003-05-21 07:15&$0$\\
ESA VILSPA 2&2003-05-21 07:15 to 07-03 14:23&$73$\\
NASA DSS--16&before 2003-05-21 07:15&$42$\\
NASA DSS--16&2003-05-21 07:15 to 07-03 14:23&$34$\\
NASA DSS--24&before 2003-04-01 12:00&$-78~081$\\
NASA DSS--24&2003-04-01 12:00 to 05-21 07:15&$54$\\
NASA DSS--24&2003-05-21 07:15 to 07-03 14:23&$43$\\
All&after 2003-07-03 14:23&$0$\\
\hline
\end{tabular}
\end{table}