\begin{table}%TB.2
\caption{\label{par_classII_high} Parameters of the 6~GHz \METH\ maser (Class~II) detected in \high\ sources with the Effelsberg 100-m telescope.}
%\centering
\par
\begin{tabular}{cccccc}
\hline \hline
\noalign{\smallskip}
Source & \Vlsr\tablefootmark{a} & $\int F_\nu {\rm d}V$  &    $V$     &      $\Delta V$    &     $F_{\rm peak}$  \\
        & (km s$^{-1}$)  &  (Jy km s$^{-1}$)  & (km s$^{-1}$)  &  (km s$^{-1}$)  &  (Jy)  \\
\hline\\[-3.2mm]
00338+6312* &   $-17.5^{f}$  &    $6.4\pm0.1$        &  $-23.030\pm0.001$ &     $0.287\pm0.003$ &        21.0          \\    
                         &           &     $2.8\pm0.2$  &          $-22.64\pm0.02$ &     $0.74\pm0.04$  &         3.62           \\
05274+3345  & --3.8  &      $2.40\pm0.04$ &        $0.324\pm0.002$ &    $0.331\pm0.006$  &     6.81           \\  
    &      &    $10.07\pm0.04$ &         $1.244\pm0.003$  &   $0.584\pm0.004$   &   16.2           \\
    &       &    $16.59\pm0.04$        & $1.609\pm0.0005$   &  $0.349\pm0.003$   &   44.6           \\ 
   &    &      $1.15\pm0.03$ &         $2.140\pm0.003$ &    $0.202\pm0.005$   &   5.35           \\
05358+3543* & $-17.6$\tablefootmark{d}  &  $18\pm1$        &          $-13.8\pm0.1$ &              $0.5\pm0.1$        &  34.4 \\
   &     & $15\pm1$         &         $-13.2\pm0.1$    &              $0.3\pm0.1$        &  45.7  \\
   &     &  $19\pm1$         &         $-12.8\pm0.1$   &        $0.3\pm0.1$  &            51.8     \\
   &     &  $1.5\pm1$         &         $-11.5\pm0.1$   &          $3.0\pm0.1$  &   0.47  \\
05480+2545    &  --9.3\tablefootmark{b}   &     $0.98\pm0.03$ &         $-15.250\pm0.004$  &   $0.238\pm0.009$ &        3.88           \\
    &      &    $3.09\pm0.04$ &        $-14.730\pm0.003$   &  $0.426\pm0.007$  &    6.81           \\ 
     &       &   $0.27\pm0.03$ &         $-13.99\pm0.02$  &   $0.30\pm0.05$ &     0.84   \\
     &        & $6.15\pm0.04$ &        $-4.8940\pm0.0001$ &    $0.340\pm0.003$   &   17.0          \\
 06055+2039*  &  8.8\tablefootmark{c}    &  $0.2\pm0.02$   &     $3.9\pm0.02$  &        $0.38\pm0.06$ &     0.5 \\ 
                                  &          &   $0.78\pm0.02$  &      $5.496\pm0.006$  &        $0.47\pm0.02$   &      1.57 \\  
06056+2131    &    2.6    &    $3.7\pm0.2$ &        $8.8\pm0.1$        &  $0.3\pm0.1$          &    12.7          \\
  &         &   $2.2\pm0.2$ &        $9.6\pm0.1$        &  $0.3\pm0.1$           &   7.26          \\ 
   &        &   $0.7\pm0.2$ &        $10.6\pm0.1$        &  $1.1\pm0.1$          &   0.605          \\ 
   06058+2138* & 3.1\tablefootmark{c}  &      $4.1\pm0.2$ &   $8.470\pm0.009$ &     $0.43\pm0.03$ &         9.10 \\
                               &        &  $5.0\pm0.1$ &          $9.446\pm0.001$ &     $0.386\pm0.008$ &        12.2 \\
                              &        &  $373.0\pm0.2$ &          $10.590\pm0.001$ &     $0.784\pm0.001$ &        447 \\
                              &        &  $17.7\pm0.1$   &          $11.45\pm0.01$ &     $0.212\pm0.002$ &        78.7  \\
06061+2151   & --0.6    &    $0.51\pm0.02$ &         $-5.564\pm0.003$          & $0.232\pm0.008$    &  2.08        \\
    &         &   $0.17\pm0.03$ &         $-5.05\pm0.06$         &  $0.7\pm       0.2$         &    0.227          \\
   &        &   $0.30\pm0.02$ &          $10.63\pm0.03$         &  $0.74\pm0.07$ &    0.380        \\
  06117+1350*  & 17.9\tablefootmark{c}    &  $2.2\pm0.8$   &   $14.6\pm0.1$        &  $0.2\pm0.1$         &    9.5 \\
                                &           &  $25.0\pm0.8$  &     $15.1\pm0.1$        &  $0.5\pm0.1$         &    47.8 \\
                                &          &  $4.6\pm0.8$    &  $15.7\pm0.1$  &         $0.5\pm0.1$        &     8.2 \\
17571-2328     &   --      &  $0.85\pm0.01$ &          $143.80\pm0.03$          & $1.16\pm0.05$   &   0.686        \\
    &       &    $0.29\pm0.03$ &          $147.30\pm0.02$         &  $0.37\pm0.05$  &   0.731         \\        
17589-2312    &    21.1\tablefootmark{c}     &  $1.5\pm0.5$         &     $13.1\pm0.1$        &  $1.0\pm0.1$         &     1.44          \\        
     &        &   $7.1\pm0.5$         &$14.7\pm0.1$         &  $0.4\pm0.1$          &    19.1          \\        
     &         &  $9.6\pm0.5$         &$15.2\pm0.1$         & $0.2\pm0.1$         &     39.3          \\        
     &       &    $54.7\pm0.5$ &        $16.0\pm0.1$ &          $0.8\pm0.1$ &              62.5        \\        
     &       &   $2.21\pm0.06$ &         $17.430\pm0.006$          & $0.48\pm0.02$  &    4.30  \\        
     &       &   $2.59\pm0.04$ &         $18.7000\pm0.0008$          & $0.239\pm0.005$  &    10.2        \\        
     &       &   $3.80\pm        0.05$ &         $19.540\pm0.003$ &          $0.436\pm0.008$  &    8.19  \\        
     &       & $1.08\pm0.07$        &  $24.60\pm0.04$        &   $1.19\pm0.06$   &  0.847        \\        
     &      &    $15.60\pm0.07$ &         $25.4500\pm0.0008$ &          $0.569\pm0.002$ &      25.8 \\
    &      &    $26.07        \pm0.05$        & $26.4800\pm0.0009$        &  $0.937\pm0.002$   &   26.1 \\
     &     &    $10.0\pm          0.4$ &        $28.07\pm0.02$ &           $1.27\pm0.04$  &    7.37          \\        
    &      &    $7.8        \pm0.2$ &           $28.630\pm0.003$ &          $0.422\pm0.007$  &    17.2 \\        
18048-2019    &  49.1   &     $15.3\pm0.6$ &         $41.40\pm       0.110$  &           $0.6142\pm        0.110$  &               23.3         \\
     &     &    $17.7\pm0.6$ &         $42.1\pm0.1$ &           $0.6\pm0.1$ &               27.3         \\
     &      &    $5.9\pm0.6$ &         $43.2\pm0.1$ &           $0.4\pm0.1$ &               15.5         \\
     &       &    $0.7\pm0.6$ &         $44.2\pm0.1$ &           $1.0\pm0.1$ &              0.629         \\
     &       &   $4.1\pm0.4$  &         $45.8\pm0.1$ &            $1.9\pm0.1$ &               2.03         \\
    &       &   $5.6\pm0.4$  &         $46.8\pm0.1$ &           $0.8\pm0.1$ &               6.67         \\
    &       &   $5.2\pm0.4$  &         $47.1\pm0.1$ &           $0.3\pm0.1$ &               14.6          \\
    &        &  $1.4\pm0.4$  &         $48.1\pm0.1$ &           $0.7\pm0.1$ &               1.82          \\
   &        &  $1.0\pm0.4$  &         $50.4\pm0.1$ &           $1.0\pm0.1$ &               1.00          \\ 
18089-1732    &  32.9      &  $2.8\pm0.1$  &         $29.59\pm0.08$ &     $3.4\pm0.2$ &              0.774        \\
    &        &  $0.13\pm0.01$ &          $29.210\pm0.004$ &    $0.111\pm0.003$   &   1.07         \\
    &        &  $0.94\pm0.03$ &          $30.210\pm0.003$  &  $0.270\pm0.009$    &  3.26         \\
    &        &  $3.3\pm0.7$ &        $31.9\pm0.1$        &  $0.7\pm0.1$        &      4.50         \\
    &        &  $4.7\pm0.7$ &        $32.8\pm0.1$         & $0.5\pm0.1$         &     9.18         \\
    &       &  $24.7\pm0.7$ &         $33.7\pm0.1$         & $0.5\pm0.1$        &      50.3         \\
    &        &  $3.8\pm0.7$ &        $34.7\pm0.1$         & $0.4\pm0.1$        &      8.22         \\
\par
    &        &   $1.9\pm0.7$ &        $36.5\pm0.1$        &  $0.5\pm0.1$         &     3.87         \\
    &   32.9     &  $5.3\pm0.7$ &        $37.9\pm0.1$         &  $1.1\pm0.1$        &      4.61         \\
    &       &  $5.8\pm        0.7$ &        $38.7\pm0.1$        &  $0.3\pm0.1$         &     17.2         \\
    &       &   $27.1\pm0.7$ &        $39.2\pm0.1$         & $0.5\pm0.1$         &     55.4          \\
    &       &   $3.6\pm0.7$ &        $42.4\pm0.1$         &  $10.4\pm0.1$        &     0.321          \\
\hline
18102-1800   &   21.1$^{d}$   &    $3.8\pm0.1$        &  $21.6\pm0.1$         &   $0.5\pm0.1$  &        7.05            \\   
    &      &   $1.5\pm0.1$        &  $23.1\pm0.1$        &    $0.4\pm0.1$  &        3.09            \\  
   &        &   $2.9\pm0.1$  &        $24.0\pm0.1$ &          $0.6\pm0.1$        &      4.23          \\
    &        &  $1.40\pm0.04$ &         $25.020\pm0.006$           & $0.49\pm0.02$   &   2.69          \\        
    &       &   $1.11\pm0.04$ &         $25.640\pm0.007$          & $0.46\pm0.02$   &   2.28          \\
    &       &   $0.19\pm0.03$ &         $27.22\pm0.03$ &          $0.51\pm0.1$ &     0.35 \\
18134-1942     & 10.5   &     $2.28\pm0.08$ &         $4.877\pm0.004$ &          $0.28\pm0.01$  &    7.56  \\
    &   &      $42\pm3$ &        $6.4\pm0.1$        &   $1.1\pm0.1$        &      35.0          \\
     &    &     $37\pm3$ &        $6.6\pm0.1$        &  $0.3\pm0.1$          &    107.          \\
    &     &    $40\pm3$ &        $7.7\pm0.1$        &  $0.4\pm0.1$         &     83.2          \\
    &     &     $8\pm3$ &        $8.3\pm0.1$        &  $0.5\pm0.1$         &     16.7          \\
    &     &     $14\pm3$ &        $8.8\pm0.1$        &  $0.4\pm0.1$          &    31.1          \\
    &     &      $3\pm3$ &         $13.3\pm0.1$        &  $0.5\pm0.1$          &    5.64          \\
    &     &   $1.6\pm0.3$ &        $14.4\pm0.1$        &  $0.5\pm0.1$  &    3.01          \\
    &      &     $7.3\pm0.4$ &        $14.7\pm0.1$        &  $0.4\pm0.1$          &    16.4          \\
   &        &     $2.5\pm0.4$ &        $15.4\pm0.1$        &  $0.4\pm0.1$          &    5.26          \\
    &      &   $1.3\pm0.4$ &        $16.1\pm0.1$        &  $0.4\pm0.1$          &    3.20          \\
18151-1208    &   32.8     &   $11.75\pm0.09$ &         $27.630\pm0.002$ &    $0.323\pm0.003$ &    34.1          \\
    &       &   $31.16\pm0.08$ &         $28.000\pm0.003$ &     $0.258\pm0.007$ &     113.          \\
    &        &   $0.57\pm0.05$ &          $28.990\pm0.007$   &  $0.30\pm0.03$ &      1.78          \\
18159-1648    &   22.1     &   $0.20\pm0.04$  &    $22.7\pm0.1$        &       $1.2\pm0.4$        & 0.154    \\
18236-1205    &   26.2      &  $0.9\pm0.2$ &        $25.1\pm0.1$ &           $1.1\pm0.1$ &             0.746         \\
     &        &   $1.8\pm0.2$ &        $25.2\pm0.1$ &  $0.5\pm0.1$        &      3.37         \\
    &        &   $3.6\pm0.2$ &        $27.2\pm0.1$ &          $0.5\pm0.1$          &    6.19         \\
    &         &  $3.0\pm0.2$ &        $28.7\pm0.1$ &          $0.5\pm0.1$        &      5.98         \\
    &       &  $0.3\pm0.2$ &        $29.9\pm0.1$ &          $0.9\pm0.1$ &             0.341         \\
18247-1147     &   55.9    &    $0.34\pm0.02$        &  $116.300\pm0.005$ &          $0.23\pm0.01$  &    1.38 \\
   &        &  $0.31\pm0.02$ &          $123.00\pm0.02$         & $0.39\pm0.04$  &   0.756         \\
18265-1517    &  19.0\tablefootmark{b}    &    $8.83\pm0.06$    &  $14.900\pm0.003$ &         $0.256\pm0.002$ &      32.4 \\ 
     &      &    $1.44\pm0.09$    &  $15.55\pm0.02$ &         $0.53\pm0.04$ &     2.55 \\
     &       &   $6.02\pm0.06$   &   $17.250\pm0.002$ &         $0.324\pm0.004$  &    17.4  \\
   &       &   $2.33\pm0.06$    &  $18.660\pm0.005$ &         $0.38\pm0.01$  &    5.82 \\
18316-0602    &  42.2    &    $0.5\pm0.4$        & $38.5\pm0.1$        &   $0.4\pm0.1$ &               1.41           \\ 
    &      &    $4.0\pm0.4$         & $41.0\pm0.1$        &   $0.9\pm0.1$ &               4.04           \\ 
    &      &     $39.3\pm0.4$         & $41.8\pm0.1$        &   $0.3\pm0.1$ &               118.           \\ 
    &       &  $0.7\pm0.4$        & $42.5\pm0.1$        &   $0.4\pm0.1$        &       1.87           \\
18317-0845    &  62.4      &  $0.22\pm0.03$ &          $59.67\pm0.05$  &   $0.7\pm0.1$ &              0.304          \\         
    &         &  $0.27\pm0.04$ &          $63.15\pm0.03$  &   $0.48\pm0.06$ &    0.537           \\
    &         & $0.60\pm0.07$ &          $63.890\pm0.005$  &   $0.28\pm0.02$  &    1.99           \\
    &        & $3.5\pm0.1$ &         $64.39\pm0.01$  &   $0.96\pm0.04$ &     3.39           \\
    &        &   $0.49\pm0.05$ &          $65.020\pm0.005$ &    $0.26\pm0.02$ &     1.75          \\
    &       &   $0.18\pm0.02$ &          $65.77\pm0.01$  &   $0.22\pm0.02$  &   0.771           \\
18372-0541    &    22.8   &     $0.95\pm0.04$ &          $18.25\pm0.01$ &          $0.54\pm0.02$  &    1.65 \\   
    &        &    $2.81\pm0.03$ &         $22.900\pm0.001$        &  $0.296\pm0.004$  &    8.91        \\   
     &       &   $2.8\pm0.1$         & $24.06\pm0.02$        &   $1.00\pm0.06$  &    2.67        \\  
    &         & $3.7\pm0.1$ &         $24.860\pm0.003$        &  $0.433\pm0.007$ &     8.11        \\ 
18408-0353    &   102.1\tablefootmark{b}      &  $0.20\pm0.04$ &          $100.00\pm0.06$         & $0.7\pm0.2$ &             0.293        \\
    &         &  $0.11\pm0.03$ &          $105.30\pm0.03$         &  $0.3\pm0.1$ &             0.334         \\
   &        &   $0.57\pm0.02$ &          $106.400\pm0.003$ &          $0.238\pm0.009$ &      2.24 \\
18488+0000   &    83.2   &     $2.7\pm0.3$  &        $90.2\pm0.1$ &          $0.6\pm0.1$        &      4.17          \\                
   &       &     $1.7\pm0.3$  &        $90.9\pm0.1$ &          $0.4\pm0.1$        &      3.78         \\
   &       &    $0.6\pm0.3$ &        $91.4\pm0.1$ &          $0.2\pm0.1$        &      2.69         \\
   &       &    $6.3\pm0.3$  &        $91.9\pm0.1$ &          $0.4\pm0.1$        &      13.8         \\        
   &       &    $0.27\pm0.02$ &          $94.190\pm0.007$        &  $0.24\pm0.02$ &     1.07         \\
    &      &    $0.12\pm0.02$ &          $94.69\pm0.02$        &  $0.25\pm0.04$ &    0.478         \\
 \hline
\par
18507+0121    &   57.1    &    $8.62\pm0.02$ &         $55.660\pm0.003$  &   $0.394\pm0.003$ &     20.6          \\
   &       &    $0.17\pm0.01$ &          $57.860\pm0.003$  &    $0.20\pm0.01$  &   0.766          \\
   &       &    $0.93\pm0.08$ &          $59.9\pm0.1$        &   $0.4\pm0.1$ &               2.05          \\
   &       &    $1.8\pm0.08$ &         $62.5\pm0.1$ &           $0.6\pm0.1$ &               2.73          \\
18517+0437   &   43.7    &    $1.4\pm0.1$ &        $39.64\pm0.03$ &           $1.0\pm0.1$ &              1.33          \\
   &         &    $138.1\pm0.3$  &        $41.180\pm0.003$ &          $0.524\pm0.003$ &     248.  \\
   &         &  $1.56\pm0.2$  &        $42.75\pm0.04$ &          $0.8\pm0.1$ &              1.88         \\
   &          &  $3.2\pm0.2$ &        $45.34\pm0.05$ &           $1.7\pm0.1$ &              1.81         \\
    &        &   $1.67\pm0.08$ &         $45.910\pm0.004$ &          $0.23\pm0.01$ &     6.74  \\
    &        &  $0.69\pm0.08$ &          $48.22\pm0.02$ &          $0.40\pm0.06$ &     1.62  \\
    &        &  $2.35\pm0.08$ &         $51.26\pm0.01$        &  $0.50\pm0.02$ &     4.38         \\
18532+0047    &  58.6     &   $0.23\pm0.02$ &     $61.89\pm0.02$  &   $0.48\pm0.05$ &         0.449       \\
18566+0408    &  85.1     &   $0.12\pm0.02$ &          $78.41\pm0.02$         & $0.26\pm0.05$ &     0.447          \\
    &       &    $0.31\pm0.02$ &          $79.19\pm0.01$          & $0.33\pm0.03$  &   0.882          \\
   &       &   $1.12\pm0.02$ &         $79.680\pm0.004$        &  $0.37\pm0.01$ &      2.80         \\
   &      &    $1.56\pm0.07$ &         $83.7\pm0.1$          & $0.3\pm0.1$ &              4.72          \\        
   &       &    $1.39\pm0.07$ &         $84.3\pm0.1$         &  $0.6\pm0.1$ &              2.09          \\        
   &       &    $0.96\pm0.07$ &          $84.9\pm0.1$          & $0.3\pm0.1$ &              2.65          \\        
   &       &    $1.31\pm0.07$ &         $86.3\pm0.1$         &  $0.6\pm0.1$        &      2.18          \\        
   &      &     $0.23\pm0.07$ &          $87.7\pm0.1$         &  $0.7\pm0.1$        &     0.302          \\        
19230+1341   &   39.6      &    $6.69\pm0.01$   &   $35.800\pm0.001$        &  $0.658\pm0.003$   &   9.56 \\
    &         &    $16.10\pm0.05$  &    $36.900\pm0.001$        &  $0.867\pm0.003$  &    17.4 \\
    &        &    $1.00\pm0.03$  &    $38.390\pm0.003$        &  $0.32\pm0.01$    &  2.97          \\
    &          &  $3.43\pm0.05$     & $39.180\pm0.005$        &  $0.93\pm0.02$    &  3.47          \\
   &         &     $0.95\pm0.03$  &    $40.65\pm0.01$        &  $0.74\pm0.03$ &     1.20        \\
19282+1814   &  24.1       &  $1.55\pm0.02$    &  $18.860\pm0.004$   &  $0.513\pm0.008$        &  2.83     \\
19388+2357    & 34.6   &      $3.3\pm0.4$ &        $36.4\pm0.1$        &  $0.7\pm0.1$        &      4.18          \\   
    &       &   $3.5\pm0.4$ &        $37.2\pm0.1$        &  $0.5\pm0.1$         &     6.75        \\   
    &      &    $8.8\pm0.4$ &        $38.2\pm0.1$        &  $0.4\pm0.1$ &     23.0         \\   
    &        &   $0.4\pm0.4$ &        $38.7\pm0.1$        &  $0.2\pm0.1$           &   1.63        \\   
    &     &    $1.1\pm0.4$ &        $39.6\pm0.1$        &  $0.4\pm0.1$         &     2.90         \\   
20062+3550    &    0.6    &     $0.49\pm0.05$        &  $-3.0\pm0.1$        &   $0.5\pm0.1$        &      0.883 \\
    &         &   $0.48\pm0.05$        &  $-2.6\pm0.1$        &   $0.3\pm0.1$        &   1.57         \\
   &        &    $1.47\pm0.05$        &  $5.9\pm0.1$        &   $0.4\pm0.1$        &       3.75          \\
    &    0.6   &  $0.83\pm0.05$        &   $6.6\pm0.1$        &   $0.4\pm0.1$           &    1.92        \\
20126+4104    &  --3.9    &     $1.49\pm0.03$        & $-8.393\pm0.005$  &   $0.56\pm0.02$ &     2.52         \\
     &      & $4.6\pm0.9$        & $-7.7\pm0.1$        &   $0.4\pm0.1$        &       11.0         \\
    &        & $4.9\pm0.9$        & $-6.5\pm0.1$         &  $0.5\pm0.1$         &      9.09           \\
   &       &    $18.5\pm0.9$        & $-6.6\pm0.1$        &    $1.3\pm0.1$         &      13.4           \\
    &         &  $12.2\pm0.9$ &        $-6.2\pm0.1$         &  $0.3\pm0.1$          &     41.4           \\
    &      &  $1.2\pm0.9$ &        $-4.9\pm0.1$         &  $0.4\pm0.1$          &     2.68           \\
20350+4126    &    --2.5\tablefootmark{b}    &  $0.20\pm0.03$  &   $-10.93\pm0.08$        &  $0.9\pm0.2$          &   0.206          \\
   &      &  $0.09\pm0.02$   &  $-4.07\pm0.04$        &  $0.31\pm0.07$  &   0.268          \\
  21306+5540*  &  --71.1$^{f}$ & $0.13\pm0.02$  &   $-78.27\pm0.05$  &     $0.6\pm0.1$        &      0.22 \\
                            &                      &  $0.38\pm0.02$  &     $-73.33\pm0.01$  &     $0.36\pm0.02$ &      1.01 \\
                           &                       &  $0.49\pm0.03$  &     $-71.04\pm0.02$  &    $0.69\pm0.06$  &     0.66 \\
                           &                   &    $0.47\pm0.03$   &     $-69.90\pm0.01$   &     $0.46\pm0.04$  &     0.95 \\
                           &                   &    $0.20\pm0.03$  &     $-68.66\pm0.08$   &     $1.0\pm0.2$         &     0.2  \\  
22272+6358   & --9.9    &    $0.46\pm0.02$        & $-12.880\pm0.008$        &  $0.30\pm0.02$   &   1.43        \\
    &     &    $0.37\pm0.02$        & $-12.40\pm0.02$        &  $0.41\pm0.03$   &   0.853         \\  
   &     &    $20.78\pm0.02$        & $-11.010\pm0.003$        &  $0.367\pm0.003$   &   53.1          \\ 
   &     &    $6.03\pm0.02$        & $-10.270\pm0.001$        &  $0.372\pm0.002$    &  15.2         \\
22506+5944    & --51.5  &        $0.17\pm0.04$    & $-55.6\pm0.1$         &  $0.9\pm0.3$        &      0.172           \\
    &     &     $0.81\pm0.02$        &  $-53.880\pm0.006$  &    $0.44\pm0.01$  &     1.72  \\         
    22543+6145*  &  --11.1\tablefootmark{c}  &   $71\pm1$ &        $-4.7\pm0.1$        &   $0.6\pm0.1$ &               147 \\
                              &                            & $129\pm1$ &        $-4.1\pm0.1$        &   $0.3\pm0.1$  &               361 \\          
                              &                           & $101\pm1$  &         $-3.8\pm0.1$         &  $0.2\pm0.1$        &       394 \\
                              &                            & $156\pm1$ &   $-2.5\pm0.1$        &   $0.5\pm0.1$        &       296 \\  
                             &                           &  $30\pm1$  &        $-1.8\pm0.1$         &  $0.3\pm0.1$        &       92 \\  
\hline
\end{tabular}
\tablefoot{
\tablefoottext{*}{Sources rejected by Palla et~al. (\citeyear{palla});}
\tablefoottext{a}{from Molinari et~al. (\citeyear{mol96}) except when differently specified;}
\tablefoottext{b}{from \AMM\ observations performed with the Nobeyama 45-m telescope simultaneously to
the \METH\ maser observations;}
\tablefoottext{c}{from CS (2--1) observations, Bronfman et~al. (\citeyear{bronfman});}
\tablefoottext{d}{from Sridharan et~al. (\citeyear{sridharan});}
\tablefoottext{e}{from Richards et~al. (\citeyear{richards});}
\tablefoottext{f}{from Sunada et~al. (\citeyear{sunada}) and references therein.}}
\end{table}