A choropleth map of Dutch municipalities shows COVID-19 incidence rates per 100,000 residents for the period August 26 to September 8, 2020, colored on a gradient from light to dark blue. The map is rendered using D3 with geographic projections, with each municipality’s fill intensity based on its "Totaal_inc100000" value. Hovering over a region displays a tooltip with the municipality name, total cases, and incidence rate, while the accompanying legend and title clarify the scale and time window.