Tallest is No. 1, and the height is scaled by how many places the chart ran to that week, so No. 30 on a top-30 is the floor and No. 30 on a top-50 is the middle. A green column is a bulleted week — on the airplay charts, airplay gained; on the Hot 100, among the week’s greatest airplay and sales gains — which is not the same as a rise, so a green column can sit lower than the one before it. Weeks at the peak carry their position in red. A run longer than the page scrolls sideways; no week is left out of the drawing.