\begin{table}%T4
%\centering
\par
\caption{The best-fit parameters specifying the shape of the UV extinction curve. 
In the first line parameters of the standard extinction curve (Fitzpatrick (\cite{fitzpatrick}) are showed.}
\begin{tabular}{rccccc}
\hline \hline
HD & \multicolumn{1}{c}{$\gamma$~[$\mu$m$^{-1}$]} &\multicolumn{1}{c}{$x_0$~[$\mu$m$^{-1}$]} & \multicolumn{1}{c}{$c_2$}& \multicolumn{1}{c}{$c_3$} & \multicolumn{1}{c}{$c_4$} \\ \hline
          &$ 0.99         $&$ 4.596           $&$ 0.698           $&$ 3.23          $&$ 0.41          $\\ \hline
126341    &$ 0.72\pm 0.13 $&$ 4.542 \pm 0.031 $&$ 0.893 \pm 0.377 $&$ 1.86 \pm 0.72 $&$ 0.03 \pm 0.25 $\\
129557    &$ 0.82\pm 0.05 $&$ 4.580 \pm 0.010 $&$ 0.579 \pm 0.315 $&$ 2.66 \pm 1.30 $&$ 0.11 \pm 0.18 $\\
144470    &$ 0.87\pm 0.06 $&$ 4.582 \pm 0.012 $&$ 0.866 \pm 0.108 $&$ 2.90 \pm 0.33 $&$ 0.15 \pm 0.10 $\\
147165    &$ 0.94\pm 0.04 $&$ 4.572 \pm 0.007 $&$ 0.326 \pm 0.067 $&$ 3.20 \pm 0.25 $&$ 0.19 \pm 0.06 $\\
163472    &$ 0.65\pm 0.03 $&$ 4.539 \pm 0.007 $&$ 0.562 \pm 0.073 $&$ 2.22 \pm 0.17 $&$ 0.18 \pm 0.11 $\\
199140    &$ 0.77\pm 0.08 $&$ 4.611 \pm 0.021 $&$ 0.875 \pm 0.570 $&$ 1.97 \pm 1.29 $&$ 0.20 \pm 0.11 $\\
214993    &$ 0.86\pm 0.08 $&$ 4.606 \pm 0.024 $&$ 0.776 \pm 0.327 $&$ 1.75 \pm 0.79 $&$ 0.10 \pm 0.21 $\\
\hline
\end{tabular}
\label{t4}
\end{table}