\begin{table}%t1
%\centering
\par
\caption{Summary of the results of the STEP1 simulations. For each
  PSF, the slope $m_1$ and intercepts $c_i$ of the best-fit linear
  relation between input and recovered shear are shown. The $c_i$ have
  been multiplied by 100 for clarity. As no input
  $g_2$ distortion was applied in the STEP1 simulations, $m_2$ cannot
  be measured.}
\label{tab:stepresults}
\begin{tabular}{clrrrlrrr}\hline\hline
\multicolumn{1}{c}{}&&
\multicolumn{3}{c}{Weighted Average}&&
\multicolumn{3}{c}{Median}\\\hline
\multicolumn{1}{c}{PSF}&&
\multicolumn{1}{c}{$m_1$}&
\multicolumn{1}{c}{$c_1$}&
\multicolumn{1}{c}{$c_2$}&&
\multicolumn{1}{c}{$m_1$}&
\multicolumn{1}{c}{$c_1$}&
\multicolumn{1}{c}{$c_2$}\\
0 && 0.995 & $-$0.02 & 0.03 && 0.982 & $-$0.03 & 0.01 \\
1 && 1.005 & 0.06 & 0.22 && 0.981 & 0.01 & 0.12 \\
2 && 0.963 & 0.19 & 0.38 && 0.967 & 0.02 & 0.07 \\
3 && 1.009 & 0.00 & 0.03 && 0.984 & $-$0.02 & 0.02 \\
4 && 1.010 & $-$0.01 & 0.02 && 0.986 & $-$0.02 & 0.01 \\
5 && 1.012 & $-$0.01 & 0.03 && 0.988 & $-$0.04 & 0.02 \\\hline
\end{tabular}
\par
\end{table}