\providecommand{\ntables}{7}\providecommand{\algatables}{\StrLeft{ LSfminbnd posik noiseless}{\ntables}}\providecommand{\algbtables}{\StrLeft{ LSstep posik noiseless}{\ntables}}
\begin{tabularx}{1.0\textwidth}{@{}c@{}|*{5}{@{}r@{}X@{}}|@{}r@{}@{}l@{}}
\#FEs/D & \multicolumn{2}{@{}c@{}}{0.5} & \multicolumn{2}{@{}c@{}}{1.2} & \multicolumn{2}{@{}c@{}}{3} & \multicolumn{2}{@{}c@{}}{10} & \multicolumn{2}{@{}c@{}}{50} & \multicolumn{2}{@{}l@{}}{\#succ}\\\hline
\textbf{f18} & \multicolumn{2}{@{}c@{}}{\textit{6.3e+1}:55 \quad} & \multicolumn{2}{@{}c@{}}{\textit{4.0e+1}:329 \quad} & \multicolumn{2}{@{}c@{}}{\textit{4.0e+1}:329 \quad} & \multicolumn{2}{@{}c@{}}{\textit{2.5e+1}:579 \quad} & \multicolumn{2}{@{}c@{}|}{\textit{6.3e+0}:2006 } & 15 & /15\\
\algatables\hspace*{\fill} & \textbf{584} & \textbf{}\mbox{\tiny (61)} & \textbf{1919} & \textbf{}\mbox{\tiny (3949)} & \textbf{1919} & \textbf{}\mbox{\tiny (4255)} & \multicolumn{2}{@{\,}X@{\,}}{\textbf{$\infty$}} & \multicolumn{2}{@{\,}X@{\,}|}{$\infty$\,\textit{4e5}} & 0 & /15\\
\algbtables\hspace*{\fill} & 2023 & \mbox{\tiny (4150)} & 2729 & \mbox{\tiny (1943)} & 2729 & \mbox{\tiny (3368)} & \multicolumn{2}{@{\,}X@{\,}}{\textbf{$\infty$}} & \multicolumn{2}{@{\,}X@{\,}|}{$\infty$\,\textit{4e5}} & 0 & /15
\end{tabularx}