\begin{table}%T4
\caption{\label{bkfits} Results for broken power law fits for \Mvun in 
the energy band $1.5{-}12.0$~keV, assuming Galactic absorption.}
%\centering
\par
\begin{tabular}{lcccc}
\hline  \hline \noalign{\smallskip}
\multicolumn{1}{c}{Observation} &
\multicolumn{1}{c}{$\Gamma_{\rm low}$} & \multicolumn{1}{c}{$E_{\rm break}$} &
\multicolumn{1}{c}{$\Gamma_{\rm high}$} &
\multicolumn{1}{c}{$\chi^2_{\rm red}$/d.o.f.}\\
\multicolumn{1}{c}{period  } & \multicolumn{1}{c}{ }
&\multicolumn{1}{c}{ keV } &
\multicolumn{1}{c}{ } & \multicolumn{1}{c}{}\\
 \hline \noalign{\smallskip}
O165/A &$ 2.62\pm0.01$ &
                           $ 6.25 \pm 0.51$&$3.19 \pm 0.22$& 1.029/475\\
O165/B & $2.53\pm0.01$ &
                           $ 4.69 \pm 0.29$&$2.79 \pm 0.05$& 0.949/873\\
O165/C & $2.60\pm0.01$ &
                           $ 4.92 \pm 0.46$&$2.82 \pm 0.07$& 0.940/673\\
\hline
O171-1/A &$2.22 \pm0.01$ &
                           $ 4.66 \pm 0.11$&$2.64 \pm 0.03$& 1.071/1204\\
O171-1/B &$2.38 \pm0.01$ &
                           $ 4.77 \pm 0.11$&$2.83 \pm 0.03$& 1.031/1154\\
O171-1/C &$2.47 \pm0.01$ &
                           $ 4.27 \pm 0.13$&$2.88 \pm 0.03$& 1.015/ 969\\
\hline
\end{tabular}
\end{table}