\begin{table}%t4
\caption{\label{tab-mv_LS}Mean and median fractional polarization per interval of LS.}
%\centering
\par
\begin{tabular}{c | rrrr | rrr}
\hline
\hline
&\multicolumn{4}{c|}{Mean}&\multicolumn{3}{c}{Median}\\
LS (kpc) &~$N$  &~$\left<m_{\rm v}^{8.5}\right>$  & ~$\left
<m_{\rm v}^{4.9}\right>$&$\left<m_{\rm v}^{1.4}\right>$&~$m_{\rm v}^{8.5}$ 
& ~$m_{\rm v}^{4.9}$ &$m_{\rm v}^{1.4}$\\
\hline
      ~$<$1   &   22 &   0.44~$\pm$~0.18 &  0.29~$\pm$~0.15 &   0.17~$\pm$~0.04 &
       $\rm 0.10^{+0.10}_{-0.06}$&   $\rm 0.10^{+0.06}_{-0.06}$& $\rm 0.10^{+0.03}_{-0.02}$\\
\par
      1--5 &   23 &  2.50~$\pm$~0.80 &  0.80~$\pm$~0.36 &   0.18~$\pm$~0.04&
      $\rm 1.28^{+0.60}_{-0.40}$& $\rm 0.24^{+0.18}_{-0.08}$& $\rm 0.14^{+0.04}_{-0.04}$\\
\par
      5--10 &   20 &  4.2~~$\pm$~0.66 &  3.4~$\pm$~0.60 &   1.48~$\pm$~0.46&
      $\rm 3.95^{+0.50}_{-0.70}$& $\rm 2.9^{+0.70}_{-0.30}$& $\rm 0.34^{+0.60}_{-0.14}$\\
\par
      10--20  &   19 & 3.8~$\pm$~0.50&   2.8~$\pm$~0.5 &   1.31~$\pm$~0.37&
      $\rm 3.6^{+0.60}_{-0.15}$& $\rm 2.25^{+0.70}_{-0.50}$& $\rm 1.01^{+0.15}_{-0.25}$\\
\hline
\end{tabular}
\end{table}