errorbar plot

Hi all,

I have this line about errorbar plot, but i need a errorbar this: http://img14.imageshack.us/i/exampled.jpg/ (in blue)

My
line about errorbar: plt.errorbar(x, y, yerr=e, capsize=6, elinewidth=2, marker=’_’, linestyle=’’, markeredgecolor=‘r’,color=‘r’, label=‘Pontos’)

Can you help me?

Thanks,