\begin{table}%t2
%\centering
\par
\caption{\label{tab_totalstat}Statistics of magnetic elements with the three different methods.} 
\begin{tabular}{cllll}     
\hline                  
\hline
Method & Term & Positive & Negative & All\\
\hline
\multirow{6}*{Ours} & Numbers &5365&4914&10~279\\
& Total flux($10^{20}$ Mx)&11.4&6.22&17.6\\
& Mean flux($10^{17}$ Mx)&2.12&1.26&1.71\\
& Total area($10^{19}$ cm$^2$)&$2.63$&$2.09$&$4.72$\\
& Mean area($10^{15}$ cm$^{2}$)&$4.91$&$4.25$&$4.60$\\
& Mean density(G)&24.19&18.20&21.33\\
\hline
\multirow{6}*{Downhill} & Numbers &7736&6512&14~248\\
& Total flux($10^{20}$ Mx)&11.1&5.91&17.0\\
& Mean flux($10^{17}$ Mx) &1.43&0.91&1.19\\
& Total area($10^{19}$ cm$^2$)&2.35&1.80&4.15\\
& Mean area($10^{15}$ cm$^2$)&3.04&2.76&2.92\\
& Mean density(G)&29.48&23.29&26.65\\
\hline
\multirow{6}*{Clumping} & Numbers &2391&2446&4837\\
& Total flux($10^{20}$ Mx)&11.5&6.27&17.8\\
& Mean flux($10^{17}$ Mx)&4.80&2.56&3.67\\
& Total area($10^{19}$ cm$^2$)&2.72&2.15&4.88\\
& Mean area($10^{15}$ cm$^2$)&11.4&8.81&10.1\\
& Mean density(G)&13.40&12.65&13.02\\
\hline
\end{tabular}
\end{table}