\begin{table}%tC.4
\caption{\label{rclabel_hcg37d}HCG 37d rotation curve.}
%\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
            0.37  &            0.00  &             0.9  &             0.0  &               0  &               5  &               1  &               r \\
            0.45  &            0.08  &             1.1  &             0.2  &              31  &               4  &               2  &               a \\
            0.74  &            0.00  &             1.8  &             0.0  &              24  &               5  &               1  &               a \\
            0.77  &            0.03  &             1.9  &             0.1  &              30  &               5  &               2  &               r \\
            1.04  &            0.09  &             2.6  &             0.2  &              43  &               2  &               2  &               r \\
            1.08  &            0.03  &             2.7  &             0.1  &              51  &               2  &               2  &               a \\
            1.43  &            0.33  &             3.6  &             0.8  &              52  &               4  &               7  &               a \\
            1.96  &            0.60  &             4.8  &             1.5  &              59  &               2  &              19  &               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}