    scilla_data, evm_data = plot_data

    # create plot
    fig, ax = plt.subplots()
    index = np.arange(n_groups)
    bar_width = 0.35
    opacity = 0.8

    rects1 = plt.bar(index, scilla_data, bar_width,
                     alpha=opacity,
                     color='#D7191C',
                     label='Scilla')
