\begin{table}[t!]
  \begin{center}
  \begin{scriptsize} % small or scriptsize (extremo)
  \begin{tabular}{cccc}
    \toprule
      \textbf{Time} & \multirow{2}{*}{$\mathbf{\alpha}$}     & \textbf{Recall} &  \textbf{Spearman's}  \tabularnewline
      \textbf{Span} &                                        &                 &  \textbf{Coef.}       \tabularnewline
    \midrule
	\multirow{8}{*}{1968-1980} & 0.25 & 0.60 & 0.14  \tabularnewline
					           & 0.50 & 0.76 & 0.70 \tabularnewline
					           & 0.75 & 0.80 & 0.83 \tabularnewline
					           & 1.00 & 0.80 & 0.88 \tabularnewline
					           & \textbf{1.25} & \textbf{0.84} & \textbf{0.87} \tabularnewline
					           & 1.50 & 0.80 & 0.84 \tabularnewline
					           & 1.75 & 0.80 & 0.79 \tabularnewline
					           & 0.00 & 0.36 & -1.43 \tabularnewline
					           
					           
	\addlinespace[.1cm]
	
	\multirow{8}{*}{1968-1990} & 0.25 & 0.68 & 0.17 \tabularnewline
							   & 0.50 & 0.80 & 0.62 \tabularnewline
							   & 0.75 & 0.88 & 0.73 \tabularnewline
							   & 1.00 & 0.88 & 0.76 \tabularnewline
							   & \textbf{1.25} & \textbf{0.92} & \textbf{0.72} \tabularnewline
							   & 1.50 & 0.92 & 0.63 \tabularnewline
							   & 1.75 & 0.88 & 0.53 \tabularnewline
							   & 0.00 & 0.08 & -4.32 \tabularnewline
							   
	\addlinespace[.1cm]
	
    \multirow{8}{*}{1968-2000} & 0.25 & 0.56 & -0.11 \tabularnewline
							   & 0.50 & 0.68 & 0.48 \tabularnewline
							   & 0.75 & 0.72 & 0.49 \tabularnewline
							   & 1.00 & 0.72 & 0.51 \tabularnewline
							   & 1.25 & 0.76 & 0.57 \tabularnewline
							   & 1.50 & 0.76 & 0.56 \tabularnewline
							   & \textbf{1.75} & \textbf{0.80} & \textbf{0.55} \tabularnewline
							   & 0.00 & 0.12 & -3.84 \tabularnewline
	\addlinespace[.1cm]
	
	\multirow{8}{*}{1968-2010} & 0.25 & 0.60 & 0.43 \tabularnewline
							   & 0.50 & 0.80 & 0.86 \tabularnewline
							   & \textbf{0.75} & \textbf{0.80} & \textbf{0.87} \tabularnewline
							   & 1.00 & 0.36 & -1.00 \tabularnewline
							   & 1.25 & 0.28 & -1.69 \tabularnewline
							   & 1.50 & 0.24 & -2.03 \tabularnewline
							   & 1.75 & 0.24 & -2.08 \tabularnewline
							   & 0.00 & 0.12 & -3.66 \tabularnewline
	
    \bottomrule
  \end{tabular}
  \end{scriptsize}
  \end{center}
  \caption{Results of the 56 fighting networks. Notice that when $\alpha=0$ the cumulative edge weighting strategy is in use. When $\alpha>0$, the decaying stra\-tegy is used.}
  \label{results_networkss}
\end{table}




