\begin{table}%tC.2
\caption{\label{rclabel_hcg7d}HCG 7d 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
            0.07  &            0.05  &             0.3  &             0.2  &               6  &              17  &               2  &               r \\
            0.11  &            0.00  &             0.4  &             0.0  &               8  &              17  &               1  &               a \\
            0.24  &            0.04  &             0.9  &             0.2  &              18  &              11  &               6  &               a \\
            0.24  &            0.04  &             0.9  &             0.1  &              16  &               7  &               4  &               r \\
            0.41  &            0.05  &             1.6  &             0.2  &              23  &               6  &               9  &               a \\
            0.44  &            0.04  &             1.7  &             0.2  &              47  &               9  &               4  &               r \\
            0.56  &            0.00  &             2.1  &             0.0  &              16  &              17  &               1  &               r \\
            0.58  &            0.03  &             2.2  &             0.1  &              12  &               4  &               7  &               a \\
            0.73  &            0.05  &             2.8  &             0.2  &              47  &               6  &               9  &               r \\
            0.74  &            0.05  &             2.8  &             0.2  &              38  &               5  &              12  &               a \\
            0.91  &            0.04  &             3.4  &             0.2  &              44  &               4  &               6  &               r \\
            0.91  &            0.05  &             3.5  &             0.2  &              38  &               4  &              12  &               a \\
            1.07  &            0.04  &             4.1  &             0.2  &              47  &               6  &               8  &               r \\
            1.08  &            0.05  &             4.1  &             0.2  &              44  &               5  &              14  &               a \\
            1.23  &            0.06  &             4.7  &             0.2  &              44  &               5  &               9  &               a \\
            1.26  &            0.04  &             4.8  &             0.2  &              49  &               6  &               9  &               r \\
            1.36  &            0.03  &             5.2  &             0.1  &              56  &               6  &              11  &               a \\
            1.41  &            0.04  &             5.3  &             0.1  &              62  &               5  &               7  &               r \\
            1.57  &            0.05  &             5.9  &             0.2  &              69  &               8  &               8  &               a \\
            1.58  &            0.05  &             6.0  &             0.2  &              60  &               6  &               9  &               r \\
            1.71  &            0.04  &             6.5  &             0.2  &              65  &               3  &               7  &               a \\
            1.76  &            0.04  &             6.7  &             0.1  &              69  &               4  &              12  &               r \\
            1.88  &            0.04  &             7.1  &             0.1  &              75  &               4  &              11  &               r \\
            1.89  &            0.05  &             7.2  &             0.2  &              74  &               9  &               5  &               a \\
            2.04  &            0.05  &             7.7  &             0.2  &              72  &               4  &               9  &               a \\
            2.04  &            0.05  &             7.7  &             0.2  &              69  &               7  &              11  &               r \\
            2.25  &            0.16  &             8.5  &             0.6  &              67  &               5  &              23  &               r \\
            2.25  &            0.12  &             8.5  &             0.5  &              75  &               4  &              23  &               a \\
            2.70  &            0.17  &            10.2  &             0.6  &              75  &               5  &              23  &               a \\
            3.35  &            0.16  &            12.7  &             0.6  &              72  &               4  &              23  &               a \\
            3.59  &            0.69  &            13.6  &             2.6  &              74  &               5  &              23  &               r \\
            3.95  &            0.19  &            15.0  &             0.7  &              74  &               4  &              23  &               a \\
            4.48  &            0.12  &            17.0  &             0.4  &              81  &               3  &              23  &               a \\
            4.89  &            0.15  &            18.5  &             0.6  &              76  &               3  &              23  &               a \\
            5.40  &            0.19  &            20.5  &             0.7  &              85  &               4  &              23  &               a \\
            7.19  &            0.96  &            27.3  &             3.6  &              69  &               4  &              22  &               a \\
            7.39  &            1.53  &            28.0  &             5.8  &              77  &               5  &              15  &               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}