Traffic-related Air Pollution - Hydrocarbons 1993
Hydrocarbon emissions are depicted both in a color grid, and in absolute numbers; the two loads depicted are hydrocarbon emission per sq. km in the entire road network, and evaporative emissions at fuel stations. Color representations are based on rounded-off figures.
The Berlin primary road network has almost 3,000 numbered sections. Pollutant loads were depicted as lines for each separate segment.
Grids and lines were assigned the same color scheme.