Three stacked SVG panels show parallel animated sequences of circles moving horizontally across colored backgrounds. Each SVG contains ten circles driven by an array of numeric values, with one panel displaying a static blue dot alongside an expanding green-outlined circle, while the other two panels animate yellow and red outlines using D3 v5 transitions. The example demonstrates creating multiple independent SVG containers via d3.select and append, applying staggered transition.attr calls with a two-second duration to position circles at calculated coordinates.