\begin{table}%t5
%\centering
\par
\caption{Contributions in arcseconds to the precession rates used in different models.\label{tab5}}
\begin{tabular}{|l|c|r|r|r|r||r|r|}
\hline\hline
Source      & \multicolumn{5}{c||}{Contribution in longitude}  & \multicolumn{2}{c|}{Contribution in obliquity} \\
\hline
& $1{\rm st}$ order & $2{\rm nd}$ ord, J$_4$, tilt & Geod. prec. & Tides \& $J_2$ rate & Non-rig & Rigid Earth & Tides \\
\hline
L77     & ~5040.698400  & $-$0.0468~   &$-$ 1.92~~~~~&$0.0~~~~$ & 0.0~~~~&0.0~~~~~& 0.0~~~~\\
\hline
W94     & 5040.689463  & $-$0.31361    &$-$  1.91936~ & $-0.0142\ t$    & 0.0~~~~&$-$0.0268~~~~&$+$0.0024 \\
\hline
MHB      & 5040.704510  & $-$0.28491    &$-$ 1.9198~~~ & $0.0~~~~$     &$-$0.02105& $-$0.02524~~&0.0 \\
\hline
P03$_{\rm prel}$& 5040.733293 & $-$0.31361  &$-$ 1.919883  & $ -0.0142\ t$ & $-$0.02105 &$-$0.027640&$+$0.0024\\
\hline
P03         & 5040.736050& $-$0.31361   &$-$ 1.919883  &   $-0.0142\ t$  & $-$0.02105& $-$0.028154&$+$0.0024 \\
\hline
\end{tabular}
\end{table}