\begin{table}%t2
%\centering
\par
\caption{Model parameters.}\label{tab:model}
\begin{tabular}{ccccccc}
\hline\hline
Source & Epoch &  Component & $S$ (Jy)& $r$ (mas)&PA (deg)& $a$ (mas) \\
\hline\noalign{\smallskip}
1727+502 ...... & 1995.534   &     C0  &     0.068    &      0.00            &      0.0    &      0.27    \\
& 1995.534   &     C1  &     0.027    &     $ 1.15\pm0.05$   &    --73.3    &	  0.36    \\
& 1995.534   &     C2  &     0.016    &     $ 2.61\pm0.11$   &    --57.4    &	  0.91    \\
& 1995.534   &     C3  &     0.016    &     $ 4.90\pm0.28$   &    --58.8    &	  1.91    \\
& 1995.534   &     C4  &     0.013    &     $ 7.48\pm0.51$   &    --55.8    &	  3.12    \\
& 1995.534   &     C5  &     0.012    &     $11.01\pm0.72$   &    --45.9    &	  4.53    \\
& 1997.055   &     C0  &     0.065    &      0.00            &      0.0    &      0.00    \\
& 1997.055   &     C1  &     0.030    &     $ 1.20\pm0.71$   &    --75.4    &	  0.60    \\
& 1997.055   &     C2  &     0.030    &     $ 2.73\pm0.08$   &    --58.8    &	  0.97     \\
& 1997.055   &     C3  &     0.010    &     $ 4.99\pm0.32$   &    --58.8    &	  1.84    \\
& 1997.055   &     C4  &     0.012    &     $ 8.06\pm0.44$   &    --54.4    &	  3.62    \\
& 1997.055   &     C5  &     0.014    &     $13.94\pm0.41$   &    --46.4    &	  5.00    \\
& 1998.493   &     C0  &     0.062    &      0.00            &      0.0    &      0.33    \\
& 1998.493   &     C1  &     0.023    &     $ 1.13\pm0.06$   &    --81.7    &	  0.46    \\
& 1998.493   &     C2  &     0.022    &     $ 2.50\pm0.48$   &    --59.0    &	  1.12    \\
& 1998.493   &     C3  &     0.028    &     $ 4.73\pm0.11$   &    --60.9    &	  1.88    \\
& 1998.493   &     C4  &     0.012    &     $ 7.19\pm0.40$    &    --53.7    &	   2.55    \\
& 1998.493   &     C5  &     0.015    &     $15.78\pm0.54$   &    --50.5    &	  5.62     \\
& 1999.893   &     C0  &     0.082    &      0.00            &       0.0   &      0.67        \\
& 1999.893   &     C2  &     0.039    &     $ 2.84\pm0.26$   &     --57.5   &	  1.69        \\
& 1999.893   &     C3  &     0.014    &     $ 6.11\pm0.76$   &     --53.4   &	  1.00        \\
& 1999.893   &     C4  &     0.009    &     $ 9.16\pm1.35$   &     --50.2   &	  4.00        \\
& 1999.893   &     C5  &     0.003    &     $17.76\pm1.44$   &     --51.4   &	  3.32        \\
& 2002.403   &     C0  &     0.071    &      0.00            &      0.0    &      0.53      \\
& 2002.403   &     C1  &     0.017    &     $ 1.01\pm0.11$   &    --63.9    &	  1.09      \\
& 2002.403   &     C2  &     0.030    &     $ 2.88\pm0.10$    &    --55.3    &	   1.30     \\
& 2002.403   &     C3  &     0.021    &     $ 6.90\pm0.25$   &    --56.1    &	  1.87      \\
& 2002.403   &     C4  &     0.009    &     $12.52\pm0.39$   & --51.9 & 3.09	   \\
1741+196 ......& 1997.055   &     E0  &     0.070    &      0.00            &      0.0    &      0.00       \\
& 1997.055   &     E1  &     0.040    &     $ 0.74\pm0.013$  &     70.2    &	  0.65       \\
& 1997.055   &     E2  &     0.018    &     $ 2.86\pm0.079$  &     77.9    &	  1.60       \\
& 1997.055   &     E3  &     0.009    &     $ 5.96\pm0.13 $  &     81.1    &	  2.01       \\
& 1997.055   &     E4  &     0.004    &     $12.83\pm1.50 $  &     85.2    &	  6.41      \\
& 1997.378   &     E0  &     0.073    &      0.00            &      0.0    &      0.35       \\
& 1997.378   &     E1  &     0.019    &     $ 0.93\pm0.10 $  &     70.4    &	  0.51       \\
& 1997.378   &     E2  &     0.015    &     $ 2.65\pm0.079$  &     79.6    &	  1.32       \\
& 1997.378   &     E3  &     0.010    &     $ 5.40\pm0.22 $  &     81.3    &	  2.41       \\
& 1997.378   &     E4  &     0.004    &     $11.93\pm1.25 $  &     84.5    &	  5.04       \\
& 1998.493   &     E0  &     0.076    &      0.00            &      0.0    &      0.28       \\
& 1998.493   &     E1  &     0.022    &     $ 0.86\pm0.14 $  &     72.0    &	  0.69        \\
& 1998.493   &     E2  &     0.017    &     $ 2.65\pm0.090$  &     78.0    &	  1.41        \\
& 1998.493   &     E3  &     0.009    &     $ 5.95\pm0.25 $  &     81.6    &	  2.47        \\
& 1998.493   &     E4  &     0.004    &     $13.39\pm1.79 $  &      85.4   &	  5.55        \\
& 1999.893   &     E0  &     0.095    &      0.00            &       0.0   &       0.64     \\
& 1999.893   &     E1 &      0.003    &     $ 1.25\pm0.71$   &      88.6   &	   0.00    \\
& 1999.893   &     E2 &      0.020    &     $ 2.79\pm0.17$   &      78.3   &	   0.83    \\
& 1999.893   &     E3 &      0.006    &     $ 6.95\pm0.38$   &      82.0    &	    0.64    \\
& 1999.893   &     E4 &      0.001    &     $13.36\pm2.72$   &      89.9    &	    2.32     \\
& 2003.447   &     E0  &     0.092    &      0.00            &       0.0   &      0.31       \\
& 2003.447   &     E1  &     0.023    &     $ 1.09\pm0.082$  &      66.1   &	  0.64       \\
& 2003.447   &     E2  &     0.015    &     $ 2.80\pm0.11 $  &      80.2   &	  1.58       \\
& 2003.447   &     E3  &     0.008    &     $ 5.82\pm0.30 $  &      84.1   &	  2.39       \\
& 2003.447   &     E4  &     0.004    &     $13.83\pm1.21 $  & 85.0 & 5.35	  \\
1133+704 ...... & 1997.055   &     M0  &     0.099    &      0.00            &        0.0  &      0.38     \\
\hline
& 1997.055   &     M1  &     0.027    &     $ 0.74\pm0.13$   &      111.1  &	  0.51      \\
& 1997.055   &     M2  &     0.006    &     $ 2.99\pm0.50$   &       99.0  &	  2.23      \\
& 1997.055   &     M3  &     0.005    &     $ 6.23\pm0.88$   &       76.7  &	  4.16       \\
& 1997.055   &     M4  &     0.005    &     $15.61\pm1.40$   &       73.1  &	  7.15       \\
& 1998.493   &     M0  &     0.091    &      0.00            &        0.0  &      0.31    \\
& 1998.493   &     M1  &     0.018    &     $ 1.27\pm0.12$   &      106.9  &	  0.70     \\
& 1998.493   &     M2  &     0.008    &     $ 3.34\pm0.25$   &      100.9  &	  1.29      \\
& 1998.493   &     M3  &     0.004    &     $14.99\pm1.66$   &       73.1  &	  5.26      \\
& 1998.493   &     M4  &     0.003    &     $ 7.55\pm1.66$   &       76.0  &	  3.42      \\
& 1999.893   &     M0  &     0.080    &      0.00	 &        0.0  &	  0.35      \\
& 1999.893   &     M1  &     0.003    &      $0.92\pm0.42$   &      119.6  &	  0.00      \\
& 1999.893   &     M2  &     0.013    &      $2.71\pm0.61$   &       93.0  &	  1.03      \\
& 1999.893   &     M3  &     0.003    &      $8.47\pm0.26$   &       78.8  &	  0.75      \\
\hline
\end{tabular}
\end{table}