\begin{table}%tC.7
\caption{\label{rclabel_hcg49a}HCG 49a rotation curve.}
\par
%\centering
\par
\begin{tabular}{cccccccc}
\hline \hline \noalign{\smallskip}
           $r$   &  $\sigma_r$   &             $r$   &    $\sigma_r$   &          $v$   & $\sigma_v$   &            $N$  &              Side \\
(kpc) & (kpc) &(\arcsec) &(\arcsec) & (km~s$^{-1}$)& (km~s$^{-1}$) & bins\\
(1)&(2)&(3)&(4)&(5)&(6)&(7)&(8)\\
\hline
            0.70  &            0.11  &             1.1  &             0.2  &             -20  &               6  &               3  &               a \\
            0.70  &            0.11  &             1.1  &             0.2  &              22  &               5  &               3  &               r \\
            1.27  &            0.05  &             1.9  &             0.1  &               0  &              13  &               4  &               a \\
            1.27  &            0.05  &             1.9  &             0.1  &              28  &               8  &               4  &               r \\
            1.65  &            0.00  &             2.5  &             0.0  &              31  &              13  &               1  &               r \\
            1.65  &            0.00  &             2.5  &             0.0  &               9  &              13  &               1  &               a \\
            1.95  &            0.12  &             3.0  &             0.2  &              27  &               6  &               7  &               a \\
            1.97  &            0.13  &             3.0  &             0.2  &              53  &               8  &               5  &               r \\
            3.00  &            0.56  &             4.6  &             0.8  &              75  &               7  &              24  &               a \\
            3.33  &            0.80  &             5.0  &             1.2  &              67  &               5  &              24  &               r \\
            4.47  &            0.46  &             6.8  &             0.7  &              96  &              12  &              13  &               a \\
            6.41  &            1.00  &             9.7  &             1.5  &             125  &               6  &              24  &               r \\
\hline
\end{tabular}
\tablefoot {(1), (3) Galactic radius. (2), (4) Dispersion around the galactic radius. (5) Rotation velocity. (6) Dispersion on the rotation velocity. (7)~Number of velocity bins. (8) Receding -- r -- or approaching -- a -- side.}
\end{table}