\begin{table}%t1
     \caption{Granule characteristics.}             % title of Table
     \label{table:1}      % is used to refer this table in the text
     %\centering
                          % used for centering table
     \begin{tabular}{l c c c}        % centered columns (4 columns)
     \hline                 % inserts double horizontal lines
     \hline
     parameter & diss & frag & diss+frag \\    % table heading
     \hline                        % inserts single horizontal line
   lifetime (min) & 8.2 & 8.2 & 8.2 \\      % inserting body of the table
   Ploner et~al. (1999)  & $8.6$ & $7.9$  & $8.2$ \\
   \hline
   size (Mm) & 1.1 & 2.7     & 1.9 \\
   Ploner et~al. (1999)  & $1.3$ & $2.7$ & $2$ \\
     \hline                                    
     \end{tabular}
     \end{table}