What was the measurement period?

On 21 September 2021, participants could pick up their measurement kit at a DPD pickup point. The measuring campaign started on 25 September and lasted four weeks, until 23 October 2021. In March 2022 participants will receive their personal results by e-mail. From then on, you will find the results of all of Brussels on the interactive dot map on the websites of Le Soir, De Standaard and BRUZZ.