def plot_cross_section(self):
    ' Plot the raw imported nist data '
    plt.plot(self.cross_section_x, self.cross_section_y)
    plt.title('Cross Section')
    plt.xlabel('Angle')
    plt.show()
Plot the raw imported nist data
def plot_cross_section(self):
    '  '
    plt.plot(self.cross_section_x, self.cross_section_y)
    plt.title('Cross Section')
    plt.xlabel('Angle')
    plt.show()