\begin{table}%t3
\caption{\label{tab3}Abundances in the Local Sgr (III), --30 \kms\ (IV) and 3-kpc (V)
Spiral Arm features.} 
%\centering
\par
\begin{tabular}{ccccccc}
\hline\hline\noalign{\smallskip}
Position       &  Feature       &  $I$(\ciso) & $N$(\ciso) & $N$(H$_2$)
           &  $N$[\hto]  &  $X$ [\hto]  \\
  &       & (K\ts\kms)        & (cm$^{-2}$)    &
           (cm$^{-2}$) &  (cm$^{-2}$)   &             \\
\noalign{\smallskip}\hline\noalign{\smallskip}
\sgrastar\ CND  &     III   &      2.10   &   $2.1\times 10^{15}$ &
           $1.0\times 10^{22}$ & $>$$2\times 10^{13}$  & $>$$2\times
           10^{-9}$ \\ 
  &  IV  &        0.18  &   $1.8\times 10^{14}$ &  $9.0\times 10^{20}$ &
           $>$$9\times 10^{12}$  & $>$$1\times 10^{-8}$ \\ 
  &   V   &       0.65  &   $6.5\times 10^{14}$ &  $3.2\times 10^{21}$
           & $>$$8\times 10^{12}$  & $>$$2\times 10^{-9}$ \\ 
\noalign{\smallskip}
+20 \kms\ cloud   &    III   &      1.00  &    $1.0\times 10^{15}$ &  $5.0\times 10^{21}$ & $>$$1\times 10^{13}$  & $>$$2\times 10^{-9}$ \\
  &   IV  &      0.34 &    $3.4\times 10^{14}$ &   $1.7\times 10^{21}$
  & $>$$1\times 10^{13}$  & $>$$6\times 10^{-9}$ \\ 
  &   V    &     0.96  &  $9.6\times 10^{14}$ &  $4.8\times 10^{21}$ &
  $>$$2\times 10^{13}$ &  $>$$4\times 10^{-9}$ \\ 
\noalign{\smallskip}
+50 \kms\ cloud   &   III   &     1.10  &    $1.1\times 10^{15}$ &  $5.5\times 10^{21}$ & $>$$2\times 10^{13}$  & $>$$4\times 10^{-9}$ \\
  &   IV   &      0.64  &   $6.4\times 10^{14}$ &  $3.2\times 10^{21}$
  & $>$$1\times 10^{13}$  & $>$$3\times 10^{-9}$ \\ 
  &    V   &      0.81  &   $8.1\times 10^{14}$ &  $4.0\times 10^{21}$
  & $>$$6\times 10^{12}$  & $>$$2\times 10^{-9}$ \\ 
\noalign{\smallskip}\hline\end{tabular}
\end{table}