\begin{table}%t1
%\centering
\par
\caption{The oscillation parameters for the fits to the residue.}\label{tab:params2}
\begin{tabular}{cccc}
\hline  \hline
Slit No. (px) & $A$ (px) & $P$ (s) & $\tau$ (s)\\
\hline 
199 & $0.9\pm0.3$ & $288\pm24$ & $1300\pm700$\\
226 & $3.\pm4.$ & $248\pm92$ & $375\pm1000$\\
264 & $0.7\pm1.6$ & $269\pm80$ & $1200\pm1000$\\
287 & $2.7\pm0.7$ & $328\pm20$ & $600\pm600$\\
\hline
\end{tabular}
\end{table}