\begin{table}%t7
\caption{$\chisq$ (for 2 d.o.f.) of each model to the high
  redshift data, without stretch correction and with systematic
  uncertainties added in quadrature ($\chisq _a$), neglecting the
  systematic uncertainties ($\chisq _b$), with stretch correction and
  adding the systematic uncertainties in quadrature ($\chisq_c$) or
  neglecting them~($\chisq_d$).}
\label{HDchi2}
%\centering
\par
\begin{tabular}{lcccc}
\hline\hline
$(\Omega_{\rm M},\Omega_\Lambda)$ & $\chisq _a$ & $\chisq _b$ & $\chisq _c$ & $\chisq _d$ \\
\hline
(0.25, 0.75)    & 2.18 & 2.36  & 1.16  & 1.44 \\
(1, 0)          & 7.56 & 8.44  & 15.56  & 18.30 \\
$(1, 0)_{{\rm dust}}$ & 3.52 & 3.96  & 5.36 & 6.48 \\
\hline
\end{tabular}
\end{table}