\begin{table}%t8
\caption{\label{ddddt}Increments $\delta T_{\rm eff}$ carried by $\delta D(0.2)$.}
\par
%\centering
\small
\begin{tabular}{ccccccc}
\hline
\hline
 & & & $T_{\rm eff}$ (K) & & & \\
17~000 & 19~000 & 21~000 & 23~000 & 25~000 & 27~000 & 30~000 \\
\hline
 & & & $\delta T_{\rm eff}$ (K) & & & \\
$+$140 & $+170$ & $+270$ & $+590$ & $+600$ & $+610$ & $+600$ \\ 
\hline
\end{tabular}
\end{table}