\begin{table}%t2
\caption{Upper limits at 3$\sigma$ on the count rate and on the fluxes in three energy bands for 3EG~J2033+4118 and WR~140.}\label{upperlimits}
%\centering
\small
\begin{tabular}{llll}
\hline \hline
 & \multicolumn{3}{c}{Upper limits (3$\sigma$)} \\
\cline{2-4}
Energy band & Count rate & Photon flux & Flux\\
 (keV) & (cts~s$^{-1}$) & (ph~cm$^{-2}$~s$^{-1}$) & (erg~cm$^{-2}$~s$^{-1}$) \\
\hline
\multicolumn{3}{l}{3EG~J2033+4118} & \\
\hline
&&& \\[-8pt]
20--60 & 0.087 & 1.1~$\times$~10$^{-4}$ & 6.1~$\times$~10$^{-12}$ \\
60--100 & 0.051 & 3.4~$\times$~10$^{-5}$ & 4.2~$\times$~10$^{-12}$ \\
100--1000 & 0.069 & 7.9~$\times$~10$^{-5}$ & 4.0~$\times$~10$^{-11}$ \\
\hline
\multicolumn{3}{l}{WR~140} & \\
\hline
&&& \\[-8pt]
20--60 & 0.090 & 1.1~$\times$~10$^{-4}$ & 6.3~$\times$~10$^{-12}$ \\
60--100 & 0.054 & 3.5~$\times$~10$^{-5}$ & 4.4~$\times$~10$^{-12}$\\
100--1000 & 0.072 & 8.2~$\times$~10$^{-5}$ & 4.2~$\times$~10$^{-11}$\\
\hline
\end{tabular}
\end{table}