% This file was created with matplot2tikz v0.5.4.
\begin{tikzpicture}

\begin{axis}[legend entries={{G*}}, 
height=6.8cm,
legend cell align={left},
legend style={
  fill opacity=1.0,
  draw opacity=1,
  text opacity=1,
  at={(0.5,-0.18)},
  anchor=north,
  draw=none
},
tick pos=both,
width=12cm,
xmajorgrids,
xmin=-0.35, xmax=7.35,
xtick style={color=black},
xtick={0,1,2,3,4,5,6,7},
xticklabels={0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9},
ylabel={log10 optimal capacity G* (GB)},
ymajorgrids,
ymin=-0.34085, ymax=6.67385,
ytick style={color=black},
ytick={-1,0,1,2,3,4,5,6,7},
yticklabels={
  \(\displaystyle {-1}\),
  \(\displaystyle {0}\),
  \(\displaystyle {1}\),
  \(\displaystyle {2}\),
  \(\displaystyle {3}\),
  \(\displaystyle {4}\),
  \(\displaystyle {5}\),
  \(\displaystyle {6}\),
  \(\displaystyle {7}\)
}
]
\addplot [black, mark=o, mark size=1.5, mark options={solid,fill opacity=0}]
table {%
0 -0.022
1 0.226
2 0.472
3 0.76
4 1.148
5 1.754
6 2.922
7 6.355
};
\end{axis}

\end{tikzpicture}