Green circle indicates a surplus in net flow, while a pink circle indicates a deficit in net flow.

The size of the circle indicates how far the value is from zero net flow. Pink circles represent negative values, while green circles represent positive values.

The small white dots moving represent people traveling from the origin to the destination, with each dot representing 5000 people.

Hovering over a green or pink circle will display the net flow value in a tooltip at the top right of the map.