Thank you for asking this question. The red vertical bars with black tabs on the chart are a graphical representation of all the eight Hn, Sn, Ln triplets. The first bar represents H1, S1, and L1 where H1 to L1 is the red vertical bar and S1 is the black tab. The second bar represents H2, S2, and L2 where H2 to L2 is the second red vertical bar and S2 is the black tab. And so on out to H8, S8 and L8. All of these are plotted on the axes of the chart. It can be useful to see large gaps. The black tabs taken all together from S1 through S8 give a graphically representation of how sentiment is viewed at the 8 different timescales.