No, I dividend between 16 waking hours - it's a pretty easy calculation: 16x3=48, which is within the range of 40-60.
If the person did it every 15 minutes it'd be 64 times during waking hours, but I felt that "roughly 20 minutes" suffices for a time range of 16-20 minutes •́ ‿ , •̀
If the person did it every 15 minutes it'd be 64 times during waking hours, but I felt that "roughly 20 minutes" suffices for a time range of 16-20 minutes •́ ‿ , •̀