\begin{table}%t1
%\centering
\par
\caption{\label{table:1}Negative of slopes of time profiles.}
\begin{tabular}{l l l l}
\hline\hline
                                  & $B=\rm Const.$           & $B\propto r^{-1}$       & $B\propto\ r^{-3/2}$\\
\hline
\noalign{\smallskip}
$\alpha_{\rm s}^{\rm uncooled}$   & $\displaystyle\frac{3p-3}{16}$   & $\displaystyle\frac{5p-1}{16}$       & $\displaystyle\frac{3p}{8}$     \\
$\alpha_{\rm s}^{\rm cooled}$     & $\displaystyle\frac{3p+10}{16}$  & $\displaystyle\frac{5p+4}{16}$   & $\displaystyle\frac{6p+1}{16}$     \\
$\alpha_{\rm ssc}^{\rm uncooled}$ & $\displaystyle\frac{3p-1}{16}$   &$\displaystyle\frac{5p+1}{16}$   & $\displaystyle\frac{3p+1}{8}$\\
$\alpha_{\rm ssc}^{\rm cooled}$   & $\displaystyle\frac{3p+22}{16}$  &$\displaystyle\frac{5p+8}{16}$   & $\displaystyle\frac{6p+1}{16}$\\
 \hline
\end{tabular}
\end{table}