\newcommand{\figureV}[3][0.49\textwidth]{
	\begin{subfigure}{#1}
	\vspace{0.5cm}
	\begin{minipage}[c]{\textwidth}%
		\includegraphics[width=1\textwidth]{figures/figure_5/#3}
	\end{minipage}
	\caption{#2}
	\end{subfigure}}

\begin{figure}
\figureV{Cluster A}{output_6_1.png}
\figureV{Cluster B}{output_6_2.png}
\figureV{Cluster C}{output_6_3.png}
\figureV{Cluster D}{output_6_4.png}
\figureV{Cluster E}{output_6_5.png}
\figureV{Cluster F}{output_6_6.png}
\figureV{Cluster G}{output_6_7.png}
\figureV{Cluster H}{output_6_8.png}
\caption{Conditional probability of task success given a number of specific unsuccesful events observed, i.e. eviction, fail, kill or lost.}\label{fig:figureV}
\end{figure}