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Rauchzeichen (Smoke Signals)   As part of the festival 'Die irritierte Stadt' (The irritated City), Stuttgart 2020
To keep the results low, several air pollution control measures are executed by the government next to the fine dust measuring station Neckartor such as wet mopping, the installation of air filter cubes or the cultivation of moss walls.
In order to counteract this manipulation the general public is invited to collectively smoke cigars with us under the sensors.
Ausgabetheke Messergebnis
Messstation TV-Beitrag
4 TV-report click here

The increase of particulate matter could be measured indeed.

Critical value for particulate matter PM10 by the WHO:
20 µg/m3