\begin{table}%t2
%\centering
\par
      \caption{Residuals.}\label{tab2}
\begin{tabular}{lrrrrrl}
            \hline
            \hline
Ephemerides & \m{4}{c}{Mean and rms of the residuals ({arcsec})}& Number  &Sat.\\
            &    &&&&of points& combinations\\
            \hline
& \m{2}{c}{RA} &\m{2}{c}{ Dec}&&Model\\
& mean  & rms res.& mean (O--C) & rms res.\\
(1)&(2)&(3)&(4)&(5)&(6)&(7)\\
            \hline
L1  &   $-$0.01336&    0.05882&    0.01638&    0.07237  & 189  &All Sat.\\
E5  &   $-$0.00030&    0.06764&    0.01055&    0.07324  &   & WOIV$^1$\\   
G5  &   $-$0.00204&    0.06647&    0.00849&    0.07626  &\\
E3  &   $-$0.00237&    0.07837&    0.00965&    0.07503  &\\
            \hline
L1  &   $-$0.03470&    0.05012&    0.00089&    0.06360  & 189  &All Sat.\\
E5  &   $-$0.02164&    0.05670&   $-$0.00494&    0.06363  &   & WIV$^2$\\
G5  &   $-$0.02338&    0.05806&   $-$0.00700&    0.06660  &\\
E3  &   $-$0.02371&    0.06724&   $-$0.00584&    0.06533  &\\
            \hline
L1  &   $-$0.03286&    0.05413&    0.00400&    0.06825  & 118  &J1 with others\\
E5  &   $-$0.01314&    0.05579&   $-$0.00074&    0.06815  && WIV\\
G5  &   $-$0.00965&    0.05908&   $-$0.00079&    0.06878  &\\
E3  &   $-$0.01553&    0.06091&   $-$0.00122&    0.06891  &\\
            \hline
L1  &   $-$0.02220&    0.04560&   $-$0.00135&    0.05263  &  77  &J2 with others\\
E5  &   $-$0.03419&    0.05531&   $-$0.01333&    0.05365  && WIV\\
G5  &   $-$0.04233&    0.05059&   $-$0.02045&    0.05808  &\\
E3  &   $-$0.03178&    0.06776&   $-$0.01455&    0.05722  &\\
            \hline
L1  &   $-$0.04263&    0.04602&   $-$0.00150&    0.06451  & 151  &J3 with others\\
E5  &   $-$0.01483&    0.05106&   $-$0.00085&    0.06344  && WIV\\
G5  &   $-$0.02684&    0.05401&   $-$0.00533&    0.06701  &\\
E3  &   $-$0.00881&    0.05691&    0.00172&    0.06340  &\\
            \hline
L1  &   $-$0.03412&    0.05797&    0.00615&    0.06664  &  32  &J4 with others\\
E5  &   $-$0.05495&    0.07133&   $-$0.01953&    0.06712  && WIV\\
G5  &   $-$0.01213&    0.07430&   $-$0.00545&    0.07300  &\\
E3  &   $-$0.10477&    0.07505&   $-$0.03761&    0.06911  &\\
            \hline    
\m{7}{l}{$^1$ WOIV: Without considering the albedo variations}\\
\m{7}{l}{$^2$ WIV: With albedo variations from Voyager and Galileo imagery}\\
\end{tabular}
\end{table}