\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{f17} & \multicolumn{2}{@{}c@{}}{\textit{1.6e+1}:54 \quad} & \multicolumn{2}{@{}c@{}}{\textit{1.0e+1}:399 \quad} & \multicolumn{2}{@{}c@{}}{\textit{6.3e+0}:688 \quad} & \multicolumn{2}{@{}c@{}}{\textit{4.0e+0}:1115 \quad} & \multicolumn{2}{@{}c@{}|}{\textit{1.0e+0}:4220 } & 15 & /15\\
\algatables\hspace*{\fill} & \textbf{566} & \textbf{}\mbox{\tiny (3796)}$^{\star}$ & \textbf{1155} & \textbf{}\mbox{\tiny (1258)} & \multicolumn{2}{@{\,}X@{\,}}{\textbf{$\infty$}} & \multicolumn{2}{@{\,}X@{\,}}{\textbf{$\infty$}} & \multicolumn{2}{@{\,}X@{\,}|}{$\infty$\,\textit{4e5}} & 0 & /15\\
\algbtables\hspace*{\fill} & 1356 & \mbox{\tiny (75)} & 1316 & \mbox{\tiny (1759)} & \multicolumn{2}{@{\,}X@{\,}}{\textbf{$\infty$}} & \multicolumn{2}{@{\,}X@{\,}}{\textbf{$\infty$}} & \multicolumn{2}{@{\,}X@{\,}|}{$\infty$\,\textit{4e5}} & 0 & /15
\end{tabularx}