plt.xlabel('problem size')
plt.plot([x[0].split('.')[1] for x in self.outputs.cool_data.value],
[x[1] for x in self.outputs.cool_data.value],
plt.xlabel('problem size')
plt.plot([x[0].split('.')[1] for x in self.outputs.cool_data.value],
[x[1] for x in self.outputs.cool_data.value],