\begin{table}%T5
\caption{Parallelism measurements.}
\label{tab:5}
%\centering
\small
\begin{tabular}{ccccc}
\hline\hline\noalign{\smallskip}
Scan date                 &FPI \#    &Fitted plane   &Fitted plane        & Common area      \\
                          &          &P--V (\AA)      &angle (arcsec)      & angle (arcsec)   \\
\hline\noalign{\smallskip}
2001 Nov. 29               &1         &16.3           &$-$0.0110, $-$0.0023    &$-$0.0119, $-$0.0032  \\
2002 Mar. 13               &1         &24.7           &$-$0.0150, ~0.0085    &$-$0.0114, $-$0.0017  \\
2002 Mar. 13               &1         &25.1           &$-$0.0160, ~0.0087    &$-$0.0116, $-$0.0019  \\
2002 Mar. 19               &1         &22.9           &$-$0.0048, $-$0.0150    &$-$0.0111, $-$0.0023  \\
2002 Mar. 20               &1         &23.6           &$-$0.0058, $-$0.0150    &$-$0.0117, $-$0.0020  \\
2002 Apr.  05              &2         &31.7           &~0.0210, ~0.0072    &~0.0200, ~0.0070  \\
2002 Jun. 10               &2         &12.4           &~0.0085, ~0.0024    &~0.0130, ~0.0039  \\
\hline
\end{tabular}
\end{table}