\begin{table}%t4
\par
\caption {\label{rt}SPI spectral parameters of GRB~061122 in 2~s intervals during the burst, fit by the Band model and combined blackbody and power-law model.}
%\centerline
 {\begin{tabular}{llrrll}
\hline\hline
  Time  &   Model  & $\alpha$    &  $\beta$   & $E_{\rm peak}$ &   Fluence$^a$\\
  from $T_0$ & &  & &/{\it kT} &\it  $\times~10^{-6}$\\
  (s) & & & &  (keV) &   (erg~cm$^{-2}$) \\
\hline
 5--7 & PL & $\rm -1.81 ^{+0.16}_{-0.15}$ & ... & ... & $1.41$ \\[1mm]
 7--9 & GRBM & $\rm -0.69 ^{+0.20}_{-0.18}$ & $\rm -2.56 ^{+0.36}_{-0.42}$ & $\rm 200 ^{+82}_{-71}$& $7.61$  \\[1mm]
 & BB+PL & $\rm -1.66 ^{+0.11}_{-0.09}$ & ... & $41 \pm 4$ & $7.81$ \\[1mm]
 9--11 & GRBM & $\rm -0.52 ^{+0.15}_{-0.20}$ & $\rm -2.93 ^{+0.29}_{-2.05}$ & $\rm 138 ^{+53}_{-57}$& $8.56$ \\[1mm]
 & BB+PL & $\rm -1.79 ^{+0.15}_{-0.20}$ & ... & $31\pm 3$ & $8.67$ \\[1mm]
11--13 & GRBM & $\rm -1.23 ^{+0.36}_{-0.24}$ & $-3.0$$^b$ & $\rm 114 ^{+80}_{-45}$ & $2.78$ \\[1mm]
 & BB+PL & $\rm -2.10 ^{+0.36}_{-0.24}$ & ... & $31 \pm 8$ & $2.83$ \\[1mm]
\hline
\end{tabular}}
\par
\smallskip
$^a$ {20--200~keV.}
$^b$ {Fixed.}
\end{table}