winners.plot(
    linewidth=0.2,
    legend=None,
    ylim=(0, 1000))
plt.xlabel('Days since publication')
plt.ylabel('Altmetric score')
plt.axhline(
    y=31.3,
    linewidth=2.5,
    linestyle='dotted')
plt.title('Evolution of altmetric score after publication on bioRxiv')
plt.show()