\begin{table} %t5
\caption{Modeling of the southern magnetic arm of NGC~4254 by stretching/shearing and 
compression processes. The radio properties of the $N$~magnetic arm are 
regarded as the initial conditions for the $S$~magnetic arm (region~3 and~1 in 
Table~\ref{t:mf}, respectively). The compression and stretching factors were 
adjusted so as to yield the observational values (given in italics) of 
synchrotron emissivity ratio $S_{2}/S_2$ or the degree of polarization in 
the southern arm $p_{2}$ (see Sect.~\ref{s:ani}). 
}
\small%\centering
\par
\begin{tabular}{lccc}
\hline
\hline
               &  stretching $\eta$ or   & $S_{2}/S_1$ & $p_{2}$  \\
               & compression $\zeta$ factor &                       \\
\hline
Observed     &   --      & $2.0\pm 0.2$     & $0.37\pm 0.03$ \\
%\hline
Stretching             &   1.53   & \em{2.0} & 0.39 \\
Stretching             &   1.47    & 1.8     & \em{0.37} \\
%\hline
Compression            &   1.24   & {\em 2.0}      & 0.29 \\
Compression            &   1.84   & 8.1     & {\em 0.37} \\
\hline 
\label{t:compr}
\end{tabular}
\end{table}