\begin{table}%t1
\caption{\label{table:1}Count rate to flux energy conversion factors (ecf)$^a$.}
\small%\centerline
 {
\begin{tabular}{c c c c c c c c c c c c c}         
\hline\hline                  
Energy band     &   & Open & & & Thin & & & Medium & & & Thick  \\
keV & ${\rm ecf_{pn}}$ & ${\rm ecf_{m1}}$ & ${\rm ecf_{m2}}$ & ${\rm ecf_{pn}}$ & ${\rm ecf_{m1}}$ & ${\rm ecf_{m2}}$ & ${\rm ecf_{pn}}$ & ${\rm ecf_{m1}}$ & ${\rm ecf_{m2}}$ & ${\rm ecf_{pn}}$ & ${\rm ecf_{m1}}$ & ${\rm ecf_{m2}}$ \\
\hline                         
    0.2--0.5   &   16.530   &    3.094   &    3.142   &    9.056   &    1.725   &    1.738   &    7.880   &    1.514   &    1.521   &    4.699   &    0.985   &    0.983         \\
      0.5--1.0   &   10.256   &    2.191   &    2.196   &    8.253   &    1.807   &    1.810   &    7.995   &    1.756   &    1.759   &    6.138   &    1.426   &    1.428         \\
        1.0--2.0   &    6.166   &    2.125   &    2.132   &    5.878   &    2.028   &    2.034   &    5.779   &    1.993   &    1.999   &    4.999   &    1.775   &    1.781         \\
      2.0--4.5   &    1.982   &    0.758   &    0.762   &    1.950   &    0.747   &    0.751   &    1.927   &    0.738   &    0.742   &    1.827   &    0.708   &    0.712         \\
     4.5--12.0   &    0.556   &    0.144   &    0.151   &    0.555   &    0.144   &    0.151   &    0.554   &    0.143   &    0.151   &    0.548   &    0.141   &    0.149        \\
\hline                                    
\end{tabular}}
\medskip
$^a$ Energy conversion factors have been calculated for each camera, optical blocking filter of the observation and energy band. To obtain the values a power-law spectral model of photon index $\Gamma=1.7$ and observed absorption $N_{\rm H}=3$~$\times$ $10^{20}~{\rm cm}^{-2}$ was assumed. The {\tt ecf} are given in units of $10^{11}~{\rm cts~cm^2~erg^{-1}}$.
\end{table}