\begin{table}%T7 
\caption{\label{simtest}Initial conditions of tests done with the simulated ISGRI data. The 
signal to noise ratio, $S/N$, was calculated for a 1~Ms effective exposure time.}
\small%\centering
\par
\begin{tabular}{cccc}
\hline\hline
Energy range & Source count rate & Bkg. count rate & $S/N$ \\
\multicolumn{1}{c}{[keV]} & [cps] & [cps] & \\
\hline
 14.0--17.8 & 0.035 & 31.1 & 6.3 \\
 17.8--21.6 & 0.037 & 35.8 & 6.2 \\
 21.6--25.4 & 0.032 & 39.7 & 5.1 \\
 25.4--31.2 & 0.035 & 44.1 & 5.3 \\
 31.2--37.9 & 0.026 & 35.7 & 4.4 \\
 37.9--45.6 & 0.022 & 34.9 & 3.7 \\
 45.6--55.1 & 0.021 & 48.9 & 3.0 \\
 55.1--68.5 & 0.021 & 92.0 & 2.2 \\
 68.5--85.8 & 0.013 & 68.5 & 1.6 \\
 85.8--112.6 & 0.013 & 65.1 & 1.6 \\
 112.6--166.2 & 0.0083 & 85.6 & 0.9 \\
 166.2--276.3 & 0.0023 & 105.2 & 0.22 \\
 276.3--462.5 & 0.00033 & 69.9 & 0.04 \\
\hline 
\end{tabular}  
\end{table}