Volume bumps every 20 minutes

[gonzalezjanjo]

Hi @mohamadkhalaj, thanks for this work, really appreciate it. I´m using your code to learn, but the volume I get bumps every 20 minutes. For example at 15:50, 16:10, 16:30, 16:50, 17:10... shows a very big peak and doesn´t show the real image of the volume. Any suggestion to fix it?

I attach you a file to show the volume over the time for a given stock: NFLX, 18 December (entire session)

Thanks mate!!