\begin{table}%t1
%\centering
\par
      \caption{Statistics of leading (Col.~3) and trailing (Col.~4) patterns in the
      LSC, nearby LSC and total (LSC + nearby LSC) galaxies. The fifth column gives the percentage
      difference ($\Delta$~=~($T$--$L$)/($T$+$L$)~$\times$100) between the trailing~($T$) and the leading~($L$) structural modes.
      The last column gives the error: $\sigma$(\%) = ($\!\sqrt{T}$--$\sqrt{L}$)/($\!\sqrt{L}$~+~$\sqrt{T}$)~$\times$~100.
      The sample/subsample and their abbreviations are given in the first two columns.\label{tab1}}
    $$
\begin{array}{p{0.4\linewidth}cccrr}
\hline\hline \noalign{\smallskip}
Subsample & $Symbol$  & L & T & \Delta$(\%)$ &  \sigma$(\%)$ \\
\hline
 \noalign{\smallskip}
{\bf LSC galaxies}  &       &       &       &       &       \\
total         &   $T1$    &   319 &   348 &   -4.3    &   -2.2    \\
spirals       &   $S1$    &   153 &   179 &   -7.8    &   -3.9    \\
spiral barred &   $SB1$   &   146 &   151 &   -1.7    &   -0.8    \\
others        &   $O1$    &   20  &   18  &   5.3     &   2.6 \\
\hline
{\bf nearby LSC galaxies}    &    &     &     &       &       \\
total         &   $T2$    &   814 &   807 &   0.4     &   0.2 \\
spirals       &   $S2$    &   395 &   367 &   3.7     &   1.8 \\
spiral barred &   $SB2$   &   191 &   269 &   -17.0   &   -8.5    \\
others        &   $O2$    &   31  &   37  &   -8.8    &   -4.4    \\
\hline
{\bf LSC + nearby LSC}      &       &       &       &       &       \\
total         &   $T3$    &   1133&   1155&   -1.0    &   -0.5    \\
spirals       &   $S3$    &   548 &   546 &   0.2     &   0.1 \\
spiral barred &   $SB3$   &   337 &   420 &   -11.0   &   -5.5    \\
others        &   $O3$    &   51  &   55  &   -3.8    &   -1.9    \\
\noalign{\smallskip} 
\hline
\end{array}
     $$
\end{table}