\begin{table}%t4
   %\centering
\par
\caption{Line-depth percent differences between bright zones (selected with three different threshold values) and the neighboring quiet zone, as obtained from THEMIS data analysis. We report as errors the propagation of experimental errors since the fit error is always much smaller.\label{Tab_IPM}}
$$
       \begin{array}{ l|c c c c| c c c}
            \hline\hline
           \rm   {LINE} & \multicolumn{4}{c|}{\rm Theoretical}& \multicolumn{3}{|c}{\rm Experimental} \\
\hline
\rm   & \delta({\rm ModE}) & \rm \delta(ModF) &\rm  \delta(ModH)&\rm  \delta(ModP) &\rm  FZ_1 &\rm  FZ_2 &\rm  FZ_3\\
		\hline
            \rm Fe~I (July 6)& -2.8\% & -6.8\% & -17.8\%& -28.7\% & -2.2 \pm 0.3\% & -4.7 \pm 0.6\% & -6.6 \pm 0.8\%  \\
            \rm Fe~I (July 7)& -2.8\% & -6.8\% & -17.8\%& -28.7\% & -6.9 \pm 0.8 \% & -8 \pm 1 \% & -4.2 \pm 0.5\%  \\
            \hline
            \rm C~I  (July 6) & +0.6\% & +2.4\% & +0\%  & -6.6\% & -1.9 \pm 0.1 \% & -2.8 \pm 0.1\% & -4.2 \pm 0.2\%  \\
            \rm C~I  (July 7) & +0.6\% & +2.4\% & +0\% & -6.6\% & +4.9 \pm 0.3\% & +4.7 \pm 0.2 \% & +11.1 \pm 0.6\%  \\
            \hline
            \rm Ti~II (July 6) & -0.9\%& -2.4\% & -8.2\% & -14.8\%& -0.50 \pm 0.08 \% & -5.6 \pm 0.9\% & -4.2 \pm 0.7\%\\
            \rm Ti~II (July 7) & -0.9\%& -2.4\% & -8.2\% & -14.8\%& -0.20 \pm 0.04\% & -0.3 \pm 0.05\%  & -7 \pm 1\% \\
		            \hline
         \end{array}
$$
        \end{table}