\begin{table}%t1
\caption{\label{model}Observational features versus model constraints based on the 
NE2001 thermal electron model.}
\small
%\centering
\par
\begin{tabular}{ll}
\hline\hline
Observational features &
   Model constrains \\
\hline
22.8~GHz free-free emission template and $\beta_{22/408~~{\rm MHz}}$ &
    NE2001 plus filling factor for thermal electrons \\
EGS RM~profile along the Galactic plane & 
 ASS+RING, ASS+ARM~or BSS regular disk field, local field strength 2~$\mu$G\\
High-latitude RMs asymmetry (to the plane and center) & 
    Asymmetric toroidal halo field, field strength up to 10~$\mu$G, CRs up to 1~kpc\\  
RM~latitude profile at $100^\circ<l<120^\circ$ & 
    Favour ASS+RING or ASS+ARM~model \\
Longitude PI asymmetry to the centre at 22.8~GHz & 
    Favour ASS+RING or ASS+ARM~model \\
Synchrotron emission longitude profiles: 408~MHz I/22.8~GHz PI & 
    Disk CR~electron component and 3~$\mu$G random field component\\
Isotropic high-latitude emission at 408~MHz & 
    Local excess of the synchrotron emission \\
Strong depolarization at 1.4~GHz & 
    Large RM~fluctuations along the line of sight\\ 
  & by a small $n_{\rm e}$ filling factor and a coupling of the 
    random field with $n_{\rm e}$\\
\hline
\end{tabular}
\end{table}