\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{f20} & \multicolumn{2}{@{}c@{}}{\textit{2.5e+4}:83 \quad} & \multicolumn{2}{@{}c@{}}{\textit{1.6e+4}:86 \quad} & \multicolumn{2}{@{}c@{}}{\textit{1.0e+3}:125 \quad} & \multicolumn{2}{@{}c@{}}{\textit{2.5e+0}:515 \quad} & \multicolumn{2}{@{}c@{}|}{\textit{1.6e+0}:5582 } & 15 & /15\\
\algatables\hspace*{\fill} & \textbf{7} & \textbf{.7}\mbox{\tiny (1)}$^{\star4}$ & \textbf{8} & \textbf{.2}\mbox{\tiny (1)}$^{\star4}$ & \textbf{12} & \textbf{}\mbox{\tiny (2)}$^{\star4}$ & \textbf{4} & \textbf{.9}\mbox{\tiny (1)}$^{\star4}$ & \textbf{4} & \textbf{.5}\mbox{\tiny (12)}$^{\star2}$ & 15 & /15\\
\algbtables\hspace*{\fill} & 178 & \mbox{\tiny (14)} & 194 & \mbox{\tiny (41)} & 225 & \mbox{\tiny (48)} & 113 & \mbox{\tiny (16)} & 23 & \mbox{\tiny (21)} & 15 & /15
\end{tabularx}