\begin{table}%t2
\caption{\label{tab:fit_cen}Results of the fitting procedure for the peak emission spectra.}
\small%\centerline
 {
\begin{tabular}{lllrrrr}         
\hline\hline                  
Object  & Grating & Line Id. & Wavelength & Flux & {\it FWHM}  & {\it FWHM}\\
        &         & $^*$     & (\AA)      & $^{**}$  & (\AA)$^{***}$ & \vel \\
\hline                                    
4C 40.36 & V300  & Ly$\alpha$          & 3961.03 & 45.83 $\pm$ 0.23 & 28.8 & 2179.7 $\pm$ 557.3\\
        &       & NV                  & 4043.84 &  2.45 $\pm$ 0.23 & 28.8 & 2135.1 $\pm$ 545.9\\
        &       & CIV                 & 5052.75 &  6.58 $\pm$ 0.20 & 35.6 & 2112.2 $\pm$ 540.1\\
        &       & HeII                & 5352.34 &  3.60 $\pm$ 0.20 & 35.6 & 1994.0 $\pm$ 510.0\\
        &       & CIII]$\lambda$1909  & 6222.77 &  3.46 $\pm$ 0.20 & 16.0 &  770.8 $\pm$ 196.9\\
\hline 
        & V600  & Ly$\alpha$          & 3967.39 & 62.11 $\pm$ 0.85 & 27.0 & 2040.2 $\pm$ 228.3\\
        &       & NV                  & 4050.35 &  2.67 $\pm$ 0.85 & 27.0 & 1998.4 $\pm$ 223.6\\
        &       & CIV                 & 5056.13 &  9.45 $\pm$ 0.33 & 21.4 & 1268.9 $\pm$ 142.0\\
\hline 
4C 48.48 & V300  & Ly$\alpha$          & 4057.26 & 46.66 $\pm$ 0.51 & 14.0 & 1034.5 $\pm$ 274.9\\
        &       & Ly$\alpha$ $1$      & 4058.39 & 37.47 $\pm$ 0.42 & 18.4 & 1359.2 $\pm$ 361.1\\
        &       & Ly$\alpha$ $2$      & 4055.83 & 11.36 $\pm$ 0.28 &  3.9 &  288.2 $\pm$ 76.6\\
        &       & CIV                 & 5170.31 &  5.16 $\pm$ 0.12 & 15.6 &  904.5 $\pm$ 240.3\\
        &       & CIV $1$             & 5172.25 &  4.13 $\pm$ 0.11 & 15.0 &  869.4 $\pm$ 231.0\\
        &       & CIV $2$             & 5165.23 &  1.00 $\pm$ 0.08 &  3.5 & 203.1 $\pm$ 54.0\\
        &       & HeII                & 5474.06 &  4.89 $\pm$ 0.21 & 10.6 &  580.5 $\pm$ 154.2\\
        &       & CIII]$\lambda$1909  & 6366.45 &  4.92 $\pm$ 0.19 & 17.9 &  842.9 $\pm$ 224.0\\
\hline
4C 48.48 & V600  & Ly$\alpha$          & 4060.72 &104.29 $\pm$ 1.21 & 13.0 & 959.7 $\pm$ 43.2\\    
        &       & Ly$\alpha$ $1$      & 4063.55 & 51.31 $\pm$ 0.99 & 16.0 &1180.4 $\pm$ 53.2\\    
        &       & Ly$\alpha$ $2$      & 4059.41 & 52.60 $\pm$ 0.78 &  9.5 & 701.6 $\pm$  31.6\\    
        &       & CIV                 & 5172.39 &  9.30 $\pm$ 0.23 & 16.5 & 956.3 $\pm$  43.1\\
        &       & CIV $1$             & 5175.85 &  6.16 $\pm$ 0.21 & 16.5 & 955.7 $\pm$  43.1\\
        &       & CIV $2$             & 5168.53 &  3.17 $\pm$ 0.16 &  8.9 & 516.2 $\pm$  23.3\\ 
\hline                                    
\end{tabular}}
\medskip
(*) $1$ indicate the broader components and $2$ the narrower one; 
(**)~10$^{-16}$~erg~s$^{-1}$~cm$^{-2}$~arcsec$^{-2}$;
(***)~after removing the instrumental profile width.
\end{table}