\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{f15} & \multicolumn{2}{@{}c@{}}{\textit{1.0e+3}:192 \quad} & \multicolumn{2}{@{}c@{}}{\textit{6.3e+2}:458 \quad} & \multicolumn{2}{@{}c@{}}{\textit{4.0e+2}:1170 \quad} & \multicolumn{2}{@{}c@{}}{\textit{2.5e+2}:3875 \quad} & \multicolumn{2}{@{}c@{}|}{\textit{2.5e+2}:3875 } & 15 & /15\\
\algatables\hspace*{\fill} & \textbf{30} & \textbf{}\mbox{\tiny (2)}$^{\star2}$ & \textbf{324} & \textbf{}\mbox{\tiny (433)} & \textbf{1453} & \textbf{}\mbox{\tiny (771)} & \multicolumn{2}{@{\,}X@{\,}}{\textbf{$\infty$}} & \multicolumn{2}{@{\,}X@{\,}|}{$\infty$\,\textit{4e5}} & 0 & /15\\
\algbtables\hspace*{\fill} & 109 & \mbox{\tiny (77)} & 1810 & \mbox{\tiny (1975)} & \multicolumn{2}{@{\,}X@{\,}}{$\infty$} & \multicolumn{2}{@{\,}X@{\,}}{\textbf{$\infty$}} & \multicolumn{2}{@{\,}X@{\,}|}{$\infty$\,\textit{4e5}} & 0 & /15
\end{tabularx}