\begin{table}%t4
\caption {\label{tab:fourier}Percentage of galaxies classified as barred and unbarred galaxies erroneously found to be barred by applying the 
Fourier analysis method to the sample of artificial galaxies.
}
%\centering
\par
 \begin{tabular}{c c c c c} 
   \hline\hline 
   \noalign{\smallskip} 
   $\Delta \phi_2$ & \multicolumn{3}{c}{Barred} &  \multicolumn{1}{c}{Unbarred}  \\
                   & Ferrers bars & Freeman bars & Flat bars & \\
   \noalign{\smallskip}
   \hline
   \multicolumn{5}{c}{$\Delta (I_2/I_0)=0.20$} \\ 
   10$^{\circ}$ & 29 & 26 & 18 & 5 \\
   20$^{\circ}$ & 44 & 42 & 31 & 8 \\
   30$^{\circ}$ & 51 & 51 & 37 & 8 \\
   \hline
   \multicolumn{5}{c}{$\Delta (I_2/I_0)=0.10$} \\
   10$^{\circ}$ & 47 & 44 & 35 & 19 \\
   20$^{\circ}$ & 63 & 62 & 52 & 26 \\
   30$^{\circ}$ & 69 & 70 & 60 & 31 \\
   \hline
   \multicolumn{5}{c}{$\Delta (I_2/I_0)=0.08$} \\
   10$^{\circ}$ & 53 & 50 & 40 & 22 \\
   20$^{\circ}$ & 67 & 67 & 58 & 32 \\
   30$^{\circ}$ & 73 & 74 & 65 & 36 \\
   \hline
   \multicolumn{5}{c}{$\Delta (I_2/I_0)=0.05$} \\ 
   10$^{\circ}$ & 62 & 61 & 53 & 29 \\ 	
   20$^{\circ}$ & 75 & 76 & 70 & 41 \\ 
   30$^{\circ}$ & 81 & 82 & 75 & 48 \\ 
   \hline 
 \end{tabular} 
\end{table}