%\documentstyle[aj_pt4]{article}
%\begin{document}
\pagestyle{empty}


% Table 2: Median spectral indices for each class
\begin{deluxetable}{rrrrrr}
\tablenum{2}
\tablecaption{The median spectral indices for the different 
classes of sources.
\label{spectral indices}
}
\tablehead{
\colhead{Spectral index} & \colhead{BLOs} & \colhead{HPQs} &
\colhead{LPQs}  & \colhead{RGs}  & \colhead{ALL}
}
\startdata
$\alpha_{2.3-4.8}$,ave   &0.08    & 0.11   & 0.09   & 0.23 & 0.14 \\
$\alpha_{2.3-4.8}$,quiet &$-0.01$ &$-0.01$ &0.10    & 0.18 & 0.09 \\
$\alpha_{4.8-8.4}$,ave   &0.10    &0.07    &$-0.05$ & 0.24 & 0.00 \\
$\alpha_{4.8-8.4}$,quiet &0.23    &0.04    &$-0.15$ & 0.25 & 0.01 \\
$\alpha_{2.3-8.4}$,ave   &0.18    &0.08    &$-0.05$ & 0.23 & 0.06 \\
$\alpha_{2.3-8.4}$,quiet &0.08    &$-0.02$ &$-0.05$ & 0.21 &$-0.01$ \\
$\alpha_{8.4-90}$,ave    &$-0.17$ &$-0.18$ &$-0.29$ &$-0.08$&$-0.23$ \\
$\alpha_{8.4-90}$,quiet  &$-0.30$ &$-0.42$ &$-0.50$ &$-0.43$&$-0.43$ \\
$\alpha_{90-230}$,ave    &$-0.65$ &$-0.74$ &$-0.88$ &$-0.59$&$-0.79$ \\
$\alpha_{90-230}$,quiet  &$-0.88$ &$-0.77$ &$-0.69$ &$-0.48$&$-0.74$ \\
\enddata
%\tablecomments{}
\end{deluxetable}

%\end{document}

