I am confused. The "Q2" on the x-axis makes it look like we're comparing half of a year's total to previous years' totals. My squishy human brain wants to put e

I am confused. The "Q2" on the x-axis makes it look like we're comparing half of a year's total to previous years' totals. My squishy human brain wants to put each point on equal footing. Edit: I see, the graphs are continuous.