\begin{table}%T2
%\centering
\small
\caption{Normalized, disk-integrated polarization parameters 
$\langle Q/I\rangle$ and $\langle U/I\rangle$ in the celestial
 coordinate system and the radial polarization parameters
$\langle Q_{\rm r}/I\rangle$ and $\langle U_{\rm r}/I\rangle$ for a
  centro-symmetric (radial) coordinate system centered on the
  planetary disk. The next column gives the radial polarization
  $\langle Q_{\rm r}/I\rangle^{\rm corr}$ corrected for the seeing-limited
  resolution according to Sect.~\ref{seeingsect}. The chosen 
seeing-correction factors are 1.22 for Uranus and 1.54 
  for Neptune. The last column gives the effective geometric
    albedo $A_{\rm g}$ for
  Uranus and Neptune in the corresponding filter pass band.} 
\label{intpol}
\begin{tabular}{lcccccc}
\hline\hline
               & $\langle Q/I\rangle$   
                        & $\langle U/I\rangle$  
                                & $\langle Q_{\rm r}/I\rangle$
                                         & $\langle U_{\rm r}/I\rangle$   
      & \hspace{-2mm}$\langle Q_{\rm r}/I\rangle^{\rm corr}$\hspace{-2mm} & $A_{\rm g}$ \\
               & [\%] & [\%] & [\%] & [\%] & [\%] & \\
\hline
Uranus&&&&&\\
~~~$\lambda_{673}$  
            & $-0.06$  & $+0.00$   & $+0.69$ & $-0.07$ &
               $\mathbf{+0.84}$ & 0.32 \\
~~~$\lambda_{729}$  
            & $+0.02$  & $+0.02$   & $+0.77$ & $-0.12$ & 
               $\mathbf{+0.94}$ & 0.05 \\
~~~$i$           & $-0.06$  & $-0.01$   & $+0.61$ & $-0.06$ &
               $\mathbf{+0.74}$ & 0.19 \\
~~~$z$           & $-0.01$  & $-0.02$   & $+0.35$ & $-0.02$ & 
               $\mathbf{+0.43}$ & 0.12 \\
Neptune&&&&&\\
~~~$R$          & $+0.03$  & $+0.02$   & $+0.96$ & $+0.02$ & 
               $\mathbf{+1.48}$ & 0.32 \\
~~~$i$          & $-0.03$  & $-0.00$   & $+0.70$ & $-0.02$ & 
               $\mathbf{+1.08}$ & 0.13 \\ 
~~~$z$          & $+0.04$  & $-0.03$   & $+0.43$ & $-0.04$ & 
               $\mathbf{+0.66}$ & 0.06 \\
\hline
\end{tabular}
\end{table}