\begin{table}%T1
%\centering
\par
\caption{Optimal values of the regularization parameter for the three events under examination in the case of three different
bremsstrahlung cross-sections. The choice criterion is the Morozov's discrepancy principle.}\label{tab1}
\begin{tabular}{cccc}
\hline\hline
& Kramers & Bethe-Heitler & Bethe-Heitler-Elwert \\
\hline
Feb. 20 & $\lambda=2.8\times10^{-6}$ & $\lambda=1.2\times10^{-6}$ & $\lambda=3.4\times10^{-12}$ \\
Mar. 17 & $\lambda=1.3\times10^{-6}$ & $\lambda=4.3\times10^{-7}$ & $\lambda=1.7\times10^{-12}$ \\
Aug. 6 & $\lambda=5.5\times10^{-6}$ & $\lambda=2.1\times10^{-6}$ & $\lambda=7.8\times10^{-12}$ \\
\hline
\end{tabular}
\end{table}