\begin{table}%t3
\caption{\label{tab3}Search for debris disks around nearby M-dwarfs with our new MAMBO-2 data.}
%\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)            \\
              &          &         &              & (h)  &                       &    (mJy/$11''$~beam)        &                      &   (mJy)                          \\
              &          &         &              &          &     (1)               &        (2)                 &                      &        (3)                       \\
\hline\
  GJ699       &  M4.0  &   1.82  &   14  &   1.5  &   1.22  &  $-0.03$ $\pm$ 0.08  &  $-0.36$  &  $<$7.9  \\  
  GJ406       &  M6.0  &   2.38  &   56  &   2.5  &   0.99  &  $-0.18$ $\pm$ 0.08  &  $-2.29$  &  $<$4.9   \\  
  GJ411       &  M2.0  &   2.54  &   65  &   6.5  &   0.67  &   0.06 $\pm$ 0.06  &   0.97  &  $<$3.1   \\  
  GJ905       &  M5.5  &   3.16  &  $-17$  &   0.5  &   2.30  &   0.09 $\pm$ 0.24  &   0.38  &  $<$8.6   \\  
  GJ447       &  M4.0  &   3.34  &   59  &   1.5  &   1.19  &  $-0.09$ $\pm$ 0.13  &  $-0.69$  &  $<$4.2   \\  
  GJ725(*)    &  M3+M3.5 & 3.57  &   24  &   1.0  &   1.44  &   0.29 $\pm$ 0.17  &   1.69  &  $<$4.7   \\  
  GJ1111      &  M6.5  &   3.62  &   32  &   1.0  &   1.75  &   0.09 $\pm$ 0.20  &   0.44  &  $<$5.7   \\
  GJ54.1      &  M4.5  &   3.72  &  $-79$  &   1.5  &   1.49  &  $-0.33$ $\pm$ 0.18  &  $-1.86$  &  $<$4.7   \\  
  GJ273       &  M3.5  &   3.79  &   10  &   0.5  &   2.13  &   0.17 $\pm$ 0.25  &   0.68  &  $<$6.6   \\
  GJ234       &  M4.5+M8 & 4.12  &   $-6$  &   2.5  &   1.03  &   0.30 $\pm$ 0.13  &   2.23  &  $<$2.9   \\
  GJ83.1      &  M4.5  &   4.44  &  $-46$  &   1.5  &   1.40  &  $-0.37$ $\pm$ 0.18  &  $-2.11$  &  $<$3.7   \\
  GJ687       &  M3.0  &   4.53  &   32  &   4.0  &   0.76  &   0.25 $\pm$ 0.11  &   2.18  &  $<$2.9  \\  
  LHS292      &  M6.5  &   4.54  &   41  &   0.5  &   2.29  &  $-0.35$ $\pm$ 1.52  &  $-0.23$  &  $<$5.9   \\  
  GJ1002      &  M5.5  &   4.69  &  $-69$  &   0.5  &   2.23  &   0.14 $\pm$ 0.33  &   0.43  &  $<$5.6   \\
  GJ412       &  M2+M6 &   4.83  &   63  &   0.5  &   2.26  &  $-0.21$ $\pm$ 0.36  &  $-0.58$  &  $<$5.4   \\  
  GJ388       &  M3.0  &   4.89  &   54  &   5.0  &   0.73  &   0.20 $\pm$ 0.06  &   3.25  &  $<$1.8  \\  
  GJ445       &  M3.5  &   5.38  &   38  &   1.0  &   1.55  &   0.05 $\pm$ 0.28  &   0.18  &  $<$3.4   \\
  LHS1723     &  M4.5  &   5.43  &  $-27$  &   0.5  &   2.23  &   0.49 $\pm$ 0.42  &   1.17  &  $<$4.8   \\
  GJ526(**)  &  M1.5  &   5.43  &   72  &  16.0  &   0.58  &  $-0.02$ $\pm$ 0.12  &  $-0.16$  &  $<$1.4   \\  
  GJ251       &  M3.0  &   5.57  &   15  &   1.0  &   1.54  &   0.14 $\pm$ 0.29  &   0.48  &  $<$1.7   \\  
  GJ205       &  M1.5  &   5.71  &  $-19$  &   1.0  &   1.86  &  $-1.09$ $\pm$ 0.37  &  $-2.93$  &  $<$2.0   \\  
  GJ213       &  M4.0  &   5.87  &    $-9$  &   0.5  &   2.19  &  $-0.31$ $\pm$ 0.44  &  $-0.70$  &  $<$2.4   \\  
  GJ908       &  M1.0  &   5.93  &  $-57$  &   0.5  &   2.01  &   0.24 $\pm$ 0.39  &   0.61  &  $<$2.2   \\
  GJ581       &  M3    &   6.27  &   40  &   0.5  &   1.96  &  $-0.75$ $\pm$ 0.43  &  $-1.75$  &  $<$2.1   \\  
  GJ625       &  M1.5  &   6.58  &   43  &   5.0  &   0.69  &   0.38 $\pm$ 0.15  &   2.53  &  $<$0.7   \\
  GJ408       &  M2.5  &   6.62  &   64  &   2.0  &   1.13  &   0.42 $\pm$ 0.14  &   3.05  &  $<$1.2   \\
  GJ109       &  M3.5  &   7.55  &  $-31$  &   3.0  &   0.98  &   0.32 $\pm$ 0.22  &   1.48  &  $<$1.1   \\  
  GJ102       &  M4    &   7.75  &  $-32$  &   0.5  &   2.20  &  $-0.09$ $\pm$ 0.60  &  $-0.15$  &  $<$2.4    \\  
  GJ4247      &  M4    &   8.96  &  $-21$  &   3.5  &   0.74  &   0.63 $\pm$ 0.25  &   2.56  &  $<$0.8   \\  
  GJ569 (*)   &  M2.5+M8.5 & 9.81  &  59  &  2.0  &   1.09  &  $-0.46$ $\pm$ 0.37  &  $-1.25$  &  $<$1.2   \\
\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).
{\bf (*)}: background sources in map (see Table 2);
{\bf (**)}: possibly a large debris disk (see Fig.~\ref{fig1} and Sect.~4.1.3). 
\end{table}