\begin{table}%t3
%\centering
\par
\caption{Errors in the quantities (line position, intensity and {\it FWHM})
 listed in Table \ref{tab_result}. These errors are obtained by calculating the $\sigma$ of the
 distributions of the errors for each Gaussian parameter resulting from the fitting procedure. The three groups of errors refer to  intense lines~("i''), lines blended ("b''), and faint lines ("w''), as listed in Table \ref{tab_result}. The last two columns give the total error for the line position and intensity.\label{tab_err}}  
%\centering
\par
\begin{tabular}{l c c c c c} 
\hline\hline   
& $\Delta\lambda$ (\AA) & $\Delta I/I$ & $\Delta${\it FWHM}/{\it FWHM} & $\Delta\lambda$ (\AA) (Tot)& $\Delta I/I$ (Tot)\\
\hline 
i (QS)&  0.017  &  0.13     &	0.17	 & 0.025& 0.19\\
i (A\_1)& 0.018 &  0.055    &	0.10	& 0.026	& 0.16\\
i (A\_2)& 0.012 &  0.060     &	0.15	&0.022	& 0.16\\
\hline 
b (QS) &  0.032      &  0.25    &    0.27           &   0.037  & 0.29\\
b (A\_1)&  0.038      &  0.25   &   0.27     &   0.042     & 0.29\\
b (A\_2)& 0.042    & 0.27        &  0.28  & 0.046	& 0.31\\
\hline 
w (QS)& 0.047   &  0.25     & 0.25	& 0.051	& 0.29\\
w (A\_1)& 0.024 &  0.28     & 0.24	& 0.031	&0.32\\
w (A\_2)& 0.035 &  0.28     & 0.27	& 0.040	&0.32\\
\hline 
\end{tabular} 
\end{table}