\begin{table} %t6
\caption{\label{contrast}Contrast ratio in and out of the spiral arms in NGC~4254 in polarized and 
total synchrotron as well as \ion{H}{i} emission. The positions of the inspected 
five regions are denoted in Fig.~\ref{f:intro}.
}
\label{t:contrast}
\small%\centering
\par
\begin{tabular}{lrrrrr}
\hline
\hline
                       & $a$  &  $b$ &  $c$  &  $d$  &  $e $ \\
\hline
Polarized intensity    & 5.3 & 6.1 & 12.9 & 1.9 & 16.6  \\
Nonthermal intensity   & 3.7 & 4.2 &  1.8 & 2.7 & 3.3   \\
\ion{H}{i} emission            & 2.1 & 1.8 &  2.3 & 2.5 & 1.4   \\
\hline  
\end{tabular}
\end{table}