\begin{table}%t4
\caption{\label{tab4}Fully Inverted IVM subset: Pearson correlation coefficients between $D_{\rm 2d}$ and $D_{\rm 3d}$ for the potential and the NLFF cases.}             
%\centering
\par
\begin{tabular}{c c c c}       
\hline\hline              
Extrapolation  & Used 3d   & Correlation & Corresponding   \\    
Method & criterion  & with $D_{\rm 2d}$& Probability   \\    
\hline                       
   Potential & $G_{\rm av}$ & 0.758 & 99\%\\
   NLFF with preprocessing & $G_{\rm av}$ & --0.278 & 61\%\\
   NLFF with preprocessing & $C_{n}$ & --0.102 & 25\%\\
\hline                                  
\end{tabular} 
\end{table}