\begin{table}
\caption{\label{tab:optimumparam} Main SiPM parameters used for standard and DOI timing coincidence measurements.} 
\begin{tabular}{cccc}
\hline
{} & Bias (V) & Overvoltage (V) & Threshold (V) \\
\hline
Left photodetector  &     72.6 &             2.2 &   1.64 , 1.56 \\
Right photodetector &     72.7 &             2.2 &   1.64 , 1.56 \\
\hline
\end{tabular}
\end{table}

