\begin{table}%T4
\caption{Widths $\Delta V$ (\kms) of the emission line components,
  averaged over transition. Numbers in brackets denote uncertainties
  in units of the last decimal, except when only one transition was
  observed. Dots denote missing data. For SO, values for the narrow
  and the broad components are 
  reported, whose positions are also given.}
\label{tab:velo}
%\centerline
{
\begin{tabular}{lrrrrrrrrrrr}
\hline \hline
\noalign{\smallskip}
Source &\multicolumn{2}{c}{CS$^a$} &\multicolumn{2}{c}{SO (narrow)}  &\multicolumn{2}{c}{SO (broad)} & \soo & OCS & \hhs & \hhcs & HCS$^+$  \\
       &\multicolumn{2}{c}{\hrulefill} &\multicolumn{2}{c}{\hrulefill}    &\multicolumn{2}{c}{\hrulefill} \\
                    &\vlsr & $\Delta V$ &\vlsr & $\Delta V$  &\vlsr      &   $\Delta V$ \\
\hline
W3 IRS5          & $-$38.4(3) &  2.7(11)   & $-$38.7(5) &  4.8(3)  & $-$39.0(10) & 13.5(14) & 6.6(12) & 3.5(20)   & 5.6(6) & 2.9    & 1.1(4)\\
MonR2 IRS3       & $+$10.2(1) &  2.4(2)    & $+$10.1(1) &  3.0(1)  & $+$10.0(16) &  8.2(4)  & 5.0(3)  &   ...     & 2.5    & 2.2(7) & ...   \\
NGC 6334 IRS1    &  $-$7.4(2) &  5.3(3)    & $-$7.2(11) &  4.1(1)  &  $-$7.4(13) &  11.1(1) & 5.0(7)  & 4.1(2)$^b$& 5.4    & 6.0    &  5.4 \\ 
W33A             & $+$37.5(9) &  5.4(5)    & $+$37.8(3) &  3.6(2)  & $+$36.9(10) & 11.6(11) & 5.7(30) & 4.50      & 4.1    & 5.1(12)&  7.1 \\ 
AFGL 2136        & $+$22.8(1) &  3.1(4)    & $+$22.9(2) &  2.5(8)  & $+$23.6(16) &  6.5(13) & 1.9(10) &   ...     & 3.6    & 2.9(8) &  1.0 \\ 
AFGL 2591        &  $-$5.5(2) &  3.3(6)    &  $-$6.0(3) &  3.7(2)  &  $-$5.6(9)  &  8.6(15) & 5.1(9)  & 3.8(1)    & 3.8(2) & 3.2(4) &  3.2  \\
S140 IRS1        &  $-$7.0(2) &  3.3(3)    &  $-$7.0(1) &  2.5(2)  &  $-$8.1(2)  &  9.6(22) & 3.5(8)  &   ...     & 2.9(1) & 2.9    &  2.6  \\
NGC 7538 IRS1    & $-$57.4(5) &  4.1(14)   & $-$57.5(4) &  3.8(4)  & $-$58.4(6)  & 11.5(39) & 7.0(9)  & 3.1       & 4.0(5) & 4.4    &  3.6  \\
NGC 7538 IRS9    & $-$57.2(3) &  4.1(5)    & $-$57.4(3) &  3.2(8)  & $-$55.9(5)  &  7.8(21) & 5.2(10) & 2.1       & 4.1(3) & 3.5(1) &  3.5  \\
\hline
\end{tabular}}
\par
\medskip
$^a$ From \citet{fvdt00}. $^b$ Value for OC$^{34}$S.
\end{table}