\providecommand{\ntables}{7}\providecommand{\algatables}{\StrLeft{ HCMA}{\ntables}}\providecommand{\algbtables}{\StrLeft{ LSfminbnd posik noiseless}{\ntables}}\providecommand{\algctables}{\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{f21} & \multicolumn{2}{@{}c@{}}{\textit{1.0e+1}:1.7 \quad} & \multicolumn{2}{@{}c@{}}{\textit{6.3e+0}:2.6 \quad} & \multicolumn{2}{@{}c@{}}{\textit{2.5e+0}:7.9 \quad} & \multicolumn{2}{@{}c@{}}{\textit{1.6e+0}:30 \quad} & \multicolumn{2}{@{}c@{}|}{\textit{4.0e-1}:105 } & 15 & /15\\
\algatables\hspace*{\fill} & \textbf{2} & \textbf{.1}\mbox{\tiny (2)} & \textbf{2} & \textbf{.6}\mbox{\tiny (2)} & \textbf{1} & \textbf{.3}\mbox{\tiny (1)} & \textbf{3} & \textbf{.0}\mbox{\tiny (4)} & \textbf{7} & \textbf{.8}\mbox{\tiny (4)} & 15 & /15\\
\algbtables\hspace*{\fill} & \textbf{2} & \textbf{.1}\mbox{\tiny (0.9)} & 3 & .9\mbox{\tiny (7)} & 27 & \mbox{\tiny (95)} & 13 & \mbox{\tiny (4)} & 31 & \mbox{\tiny (80)} & 15 & /15\\
\algctables\hspace*{\fill} & 18 & \mbox{\tiny (61)} & 12 & \mbox{\tiny (0.9)} & 6 & .5\mbox{\tiny (25)} & 174 & \mbox{\tiny (171)} & 239 & \mbox{\tiny (454)} & 7 & /15
\end{tabularx}