\begin{table}%t2
\caption{The strongest polarized OH features in PPN candidates.}\label{tab2}
%\centering
\par
\begin{tabular}{l r r r r r r }
\hline
\hline
IRAS name & Line   & $V_{\rm c}$  & $m_{\rm C}$($\sigma$) & $V_l$ & $m_{\rm L}$($\sigma$) & $\chi$($\sigma$) \\
          & (MHz)  &(km~s$^{-1}$) &    (\%)        & (km~s$^{-1}$) & (\%) & (\degr) \\
\hline
07331$+$0021   & 1612 &  32.3     & 5.0(1.1) & 32.5   & 12.3(0.4) & $-$31.6(1.6)  \\ 
07399$-$1435   & 1667 &  19.0  &$-$2.7(0.2) & 20.4   & 10.7(0.4) & 54.2(2.4)\\
08005$-$2356   & 1612 & $-$0.3   &$-$37.0(1.5) &$-$0.4  & 51.3(5.1) & 30.5(5.7) \\ 
16342$-$3814   & 1612 & $-$7.3   &$-$70.8(2.1) &$-$7.5  & 14.2(1.9) &$-$43.8(10.7) \\
               & 1667 &  9.8 & 13.8(1.6)&$-$4.2 & 26.5(4.0) &$-$61.8(13.0)\\
17150$-$3754   & 1612 & $-$125.3 &$-$84.2(6.3) &        &       &        \\ 
17150$-$3224   & 1612 & 25.0     &$-$5.2(0.8)  & 24.9   & 9.0(1.0)  & 79.8(2.4)\\
               & 1667 & 26.0  & 8.6(1.4)& 25.9   & 4.2(0.4)  &$-$68.2(5.6)\\ 
17253$-$2831   & 1612 & $-$71.6  &$-$2.9(0.3)  &       &          &    \\ 
17347$-$3139   & 1612 & $-$23.1  & 11.9(2.4)   &        &       &       \\ 
17375$-$2759   & 1612 & 22.2     &$-$7.1(2.6) & 23.8   & 16.1(2.0)  &$-$17.5(8.3)  \\ 
17375$-$3000   & 1612 & $-$35.6  &$-$9.5(1.2) &        &       &       \\ 
17385$-$3332   & 1612 & $-$245.6 &$-$7.0(2.3) &$-$224.3& 4.1(1.1)   & 19.6(12.1)    \\ 
17393$-$2727   & 1612 & $-$120.5 & 12.9(0.8)  &$-$123.5& 4.2(0.2)  &$-$60.8(3.3) \\
               & 1667 & $-$124.5&$-$13.5(3.2)&$-$124.5& 24.3(4.3)&6.6(13.8)\\
17393$-$3004   & 1612 & 16.1     & $-$29.6(2.6)&$-$27.4 & 11.4(0.5) &$-$23.3(5.5) \\
               & 1667 &$-$22.9&$-$38.7(20.5)&   &          &          \\
17404$-$2713   & 1612 & 30.7     & $-$6.6(0.4) & 31.7   & 5.9(0.9) & 57.0(4.2)  \\
               & 1667 & 54.8  &$-$24.9(5.5)& 55.0 & 19.6(6.2) & $-$1.3(4.8)\\
17443$-$2949   & 1612 & $-$15.4  & $-$12.8(1.0)    &        &       &       \\ 
17579$-$3121   & 1612 & $-$0.2   &$-$9.3(1.1) & 22.3   & 3.0(0.1) &$-$34.5(5.5)  \\ 
18016$-$2743   & 1612 & 61.4     & 12.0(2.8)  & 61.4   & 15.9(2.7) & 0.2(10.6)   \\ 
18025$-$3906   & 1612 & $-$129.1 & 23.1(3.0)  &        &           &             \\ 
18052$-$2016   & 1612 & 79.5     & 5.7(0.4)    &        &       &       \\ 
18071$-$1727   & 1612 & 17.6     & 17.0(0.7)   &        &       &       \\
18091$-$1815   & 1612 & 10.6     & $-$5.4(7.0) &        &       &   \\
               & 1667 &  8.3  & 32.4(4.7) & 8.3    & 53.8(3.4)  &$-$49.9(16.0)\\ 
18105$-$1935   & 1612 & 8.5      & $-$7.0(0.4) &        &       &        \\ 
18135$-$1456   & 1612 & 13.5     & 3.8(0.2) & 13.1 & 5.1(0.2) & $-$21.2(3.8)\\
               & 1667 &  13.9 & $-$7.6(0.6)&  &  &  \\
18266$-$1239   & 1612 & 57.5     &$-$2.6(0.5) & 57.8   & 5.6(0.5)& 71.9(4.3)  \\ 
18276$-$1431   & 1612 & 73.3     &$-$16.1(3.6)& 48.8 & 3.5(0.1) &$-$69.8(6.0)\\
               & 1667 & 74.3 &$-$15.4(1.3)& 72.6&72.0(9.0)& 80.4(7.0)\\ 
18450$-$0148   & 1612 & 40.5     & 11.3(1.8) & 40.3 &  2.4(0.2) & 63.3(5.2) \\
               & 1667 & 40.6 & 21.1(1.2) & 26.4 & 19.0(2.4) & 77.4(6.2) \\ 
18596$+$0315   & 1612 & 99.4     &$-$11.0(2.4) & 76.9   & 4.7(0.5) &$-$3.1(4.4)   \\ 
19067$+$0811   & 1612 & 75.6     & 2.1(0.6)  & 76.5  & 69.9(18.9) & 87.9(4.3) \\
19114$+$0002   & 1612 & 123.8    &$-$6.5(0.2)&123.7 & 7.5(0.1)  &$-$88.4(0.5)\\
               & 1612 & 124.9 &$-$8.6(0.1) &124.9 & 1.8(0.1) &$-$86.9(2.6)\\
19219$+$0947   & 1612 & $-$61.9  & 6.6(0.8) &$-$62.1 & 4.0(0.4) & 3.9(10.0)   \\ 
19255$+$2123   & 1612 & 21.2     &$-$83.4(12.3)  & 21.3 & 39.9(10.1)& $-$57.2(22.7) \\ 
22036$+$5306   & 1612 & $-$72.5  & 6.1(16.3) &$-$63.5 & 23.2(1.1) &$-$74.1(1.1)  \\
\hline
\end{tabular}
\end{table}