\begin{table}%t4
\caption{\label{tab4}Reanalysis of the MAMBO-2 data of the M-dwarfs associated with moving groups of survey~I.}
%\centerline
{\begin{tabular}{l|lccccccc} \hline\hline
       Name   & Spectral &   $D$     & Gal. l.      & Integration &  Map rms   &   Mean  brightness         & $\mu/\sigma_{\mu}$  &  $3\sigma$ flux density   \\
              & type     &  (pc)   & ($^{\circ}$) & time     & (mJy/$11''$~beam)    &   $\mu \pm \sigma_{\mu}$   &     (2)            &  upper limit (1.2~mm)  \\
              &          &         &              & (hours)  &               &    (mJy/$11''$~beam)        &                     &  (mJy)            \\
              &          &         &              &          &   (1)         &       (2)                  &                     &      (3)          \\
\hline\ 
  GJ65        &  M5.5  &   2.6  &  $-76$  &   1.0  &   2.30  &  $-0.15$ $\pm$ 0.17  &  $-0.87$  &  $<$10.4   \\  
  GJ628       &  M3.5  &   4.5  &   24  &  20.0  &   0.51  &  $-0.06$ $\pm$ 0.08  &  $-0.74$  &  $<$1.3   \\  
  GJ876       &  M4    &   4.7  &  $-59$  &   0.5  &   2.80  &   0.17 $\pm$ 0.46  &   0.37  &  $<$7.0   \\  
  GJ873       &  M3.5  &   5.0  &  $-13$  &   0.5  &   2.31  &   0.33 $\pm$ 0.38  &   0.86  &  $<$5.4   \\  
  GJ3379      &  M4    &   5.4  &  $-10$  &   0.5  &   2.57  &   0.05 $\pm$ 0.56  &   0.09  &  $<$5.6   \\  
  GJ285       &  M4.5  &   5.9  &   13  &   1.0  &   1.74  &  $-0.88$ $\pm$ 0.35  &  $-2.52$  &  $<$1.9   \\  
  GJ402       &  M4    &   6.8  &   55  &   1.0  &   1.81  &  $-0.86$ $\pm$ 0.39  &  $-2.18$  &  $<$2.0   \\  
  GJ393       &  M2    &   7.2  &   47  &   1.5  &   1.51  &  $-0.50$ $\pm$ 0.33  &  $-1.50$  &  $<$1.6   \\  
  GJ849       &  M3.5  &   8.8  &  $-45$  &   0.5  &   2.71  &   0.66 $\pm$ 0.89  &   0.74  &  $<$2.9   \\  
  GJ791.2     &  M4.5  &   8.9  &  $-17$  &   1.0  &   1.70  &  $-0.87$ $\pm$ 0.57  &  $-1.53$  &  $<$1.8   \\
  GJ856A      &  M3    &  16.0  &  $-20$  &   1.1  &   1.50  &  $-0.56$ $\pm$ 1.50  &  $-0.37$  &  $<$1.6   \\
  GJ9809      &  M0    &  24.0  &  03   &   0.5  &   2.20  &   0.36 $\pm$ 2.20  &  0.16   &  $<$2.4  \\\hline
\end{tabular}}
\medskip
\par
(1) rms estimated for $r < 60''$ in the map;
 (2) mean brightness and uncertainty of mean computed by averaging intensities over an effective disk of radius 60~AU;
(3)  the $3\sigma$ flux density upper limit is computed also over the same  effective area (radius~=~60~AU). 
\end{table}