{\setlength{\unitlength}{11 pt}
\begin{figure}[tb]
\begin{center}
%\begin{picture}(30,14)(0,0)
\begin{picture}(30,12)(0,0)
\thinlines

%\setcounter{numi}{0}
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%\put(0.8,7){\makebox(0,0){1.0}}

% Kommentar: das nŠchste Statement macht kleine Punkte
%\multiput(8,4)(0,0.25){4}{\multiput(0,0)(0.25,0){20}{\circle*{0.05}}}

% beliebige dicke und dŸnne Linie
%\multiput(3,1)(0.02,0.03464){250}{\rule[-0.12mm]{0.24mm}{0.24mm}}
%\multiput(4,1)(0.01,0.01732){500}{\rule[-0.06mm]{0.12mm}{0.12mm}}

%ordinate
\put(2,2){\line(0,1){10}}
\multiput(1.75,2)(0,1){11}{\line(1,0){0.5}}
\multiput(2,3)(0,1){10}{%
\multiput(0,0)(0.25,0){41}{\rule[-0.06mm]{0.12mm}{0.12mm}}}
\put(0.8,2){\makebox(0,0){0.0}}
\put(0.8,7){\makebox(0,0){0.5}}
\put(0.8,12){\makebox(0,0){1.0}}
\put(0.3,13){\makebox(0,0)[l]{cluster efficiency}}

%abszisse
\put(2,2){\line(1,0){10}}
\multiput(2,1.75)(5,0){3}{\line(0,1){0.5}}
\put(2,0.8){\makebox(0,0){1}}
\put(7,0.8){\makebox(0,0){2}}
\put(12,0.8){\makebox(0,0){4}}
\put(13,0.8){\makebox(0,0)[l]{systems per cluster}}

%T213L31
\multiput(2,12)(0.01,-0.002743){500}{\rule[-0.06mm]{0.12mm}{0.12mm}}
\put(7,10.528){\makebox(0,0){\scriptsize $\Box$}}
\multiput(7,10.628)(0.01,0.000532){500}{\rule[-0.06mm]{0.12mm}{0.12mm}}
\put(12,10.794){\makebox(0,0){\scriptsize $\Box$}}
%\multiput(14,11.7)(0.01,0){200}{\rule[-0.06mm]{0.12mm}{0.12mm}}
%\put(15,11.6){\makebox(0,0){\scriptsize $\Box$}}
%\put(17,11.7){\makebox(0,0)[l]{$T213\, L31$}}
\put(13,10.9){\makebox(0,0)[l]{$T213\, L31$}}

%T106L31
\multiput(2,12)(0.01,-0.003397){500}{\rule[-0.06mm]{0.12mm}{0.12mm}}
\put(7,10.302){\makebox(0,0){\scriptsize $\triangle$}}
\multiput(7,10.302)(0.01,-0.000477){500}{\rule[-0.06mm]{0.12mm}{0.12mm}}
\put(12,10.063){\makebox(0,0){\scriptsize $\triangle$}}
%\multiput(14,10.7)(0.01,0){200}{\rule[-0.06mm]{0.12mm}{0.12mm}}
%\put(15,10.7){\makebox(0,0){\scriptsize $\triangle$}}
%\put(17,10.7){\makebox(0,0)[l]{$T106\, L31$}}
\put(13,10.0){\makebox(0,0)[l]{$T106\, L31$}}

%T63L31
\multiput(2,12)(0.01,-0.004632){500}{\rule[-0.06mm]{0.12mm}{0.12mm}}
\put(7,9.684){\circle{0.3}}
\multiput(7,9.684)(0.01,-0.001826){500}{\rule[-0.06mm]{0.12mm}{0.12mm}}
\put(12,8.771){\circle{0.3}}
%\multiput(14,9.7)(0.01,0){200}{\rule[-0.06mm]{0.12mm}{0.12mm}}
%\put(15,9.7){\circle{0.3}}
%\put(17,9.7){\makebox(0,0)[l]{$T63\, L31$}}
\put(13,8.771){\makebox(0,0)[l]{$T63\, L31$}}

%Legende
\put(13,12){\makebox(0,0)[l]{\em resolution:}}
\put(13,6.7){\makebox(0,0)[l]{\em optimum partitioning:}} %originally: 7.7
\put(12.7,4){\footnotesize %
\begin{tabular}{lccc}
systems & 1 & 2 & 4 \\
\hline
$T213\, L31$ & $16\!\times\! 1$ & $16\!\times\! 2$ & $16\!\times\! 4$ \\
$T106\, L31$ & $16\!\times\! 1$ & $8\!\times\! 4$ & $16\!\times\! 4$ \\
$T63\, L31$ & $16\!\times\! 1$ & $8\!\times\! 4$ & $8\!\times\! 8$ \\
\end {tabular} }

\end{picture}
\end{center}
\begin{fig}
\label{efficiency}
{\rm
Cluster efficiency.
} % rm for fig
\end{fig}
\end{figure}
}

.