\begin{table}%t1
\caption {\label{Tabella01}External galaxy groups gravitationally influencing the~LG
\mbox{dynamics}.}
%\centerline
 {
\begin{tabular}{lrrccr}
\hline\hline
Group$^a$  & $l$ & $b$ & $d$$^b$  & $M$ & $ V_{{r}}$$^c$ \\
Name & $^{\circ}$ & $^{\circ}$ & Mpc & $10^{12}~ M_\odot$ & km~s$^{-1}$ \\
 \hline
 IC 342    & 138.2 &  10.6 & 3.3 & 12.6  &   171.0 \\
 Maffei    & 136.4 &  --0.4 & 3.5 &  6.3  &   152.0 \\
 M 81      & 142.1 &  40.9 &  3.7 &  1.6  &   130.0 \\
 Cen A     & 309.5 &  19.4 &  2.7 &  4.7  &   371.0 \\
 Sculptor  & 105.8 &  85.8 &  3.2 &  6.3  &   229.0 \\
 M 83      & 312.1 &  25.9 &  4.5 &  0.8  &   249.0 \\
 \hline
 Andromeda & 121.21 & --21.60 & 0.76 &  3.16 & --123.00 \\
 Milky way & 0     &     0 & 0.00  &  2.20  &     0.00 \\
 \hline
\end{tabular}}
\par
\smallskip
$^a$ {Each group is indicated by the dominant galaxy. The
members of each group are the same as in PC07 to whom the reader
should refer for all details (their Sect. 4 and Table~2). To this
list the MW and M~31 are added.} 
$^b$ {The uncertainties in the distances
and radial velocities are omitted.} 
$^c$   {The radial velocities are quoted relative to the
center of the MW. No correction for the motion of the Sun toward the
Local Standard of Rest is applied because it falls below the
accuracy adopted in this study.}
\end{table}