hey @yahialababidi, glad you like it!
Your graph unfortunately doesn't say very much because there is not much data from you. You have voted only on around 100 posts in the time range from Dec. 7th 2017 to Dec. 28th. A third of your votes in that time would not have created curation rewards even at the optimal position and another third was spent on your own posts. From the remaining third, only 13 fell into the first 5 hours. Well, drawing conclusions from 13 votes is a bit hard. But congratulations, you basically never voted too early on those! :)