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COVID-19 Daily population density change in key places of Switzerland (February - May 2020)

This dataset represents per day the percent change in population density in key places of Switzerland (Bern, Gurten Park; Bern, train station; Geneva, La Rade; Lausanne, Parc de Milan; Zurich, train station) compared to a baseline during the Covid-19 crisis from February 7th, 2020 to June 1st, 2020. The baseline is the median value of the same day of the week between January 3rd, 2020 and February 6th, 2020.
Example: on Tuesday, February 11th we noticed a change of -28.53% in Gurten Park which means a decrease of population density of 28.53% compared to the median value of Tuesdays between January 3rd, 2020 and February 6th, 2020.

Data protection: 
In order to obtain information on the travel activities, the approximate mobility of Swisscom SIM cards for a region (e.g. a canton) within a certain period of time is used. The information that is generated in the mobile network for technical reasons is automatically anonymised immediately after it is generated and is then processed in aggregated form for analysis. 

The data is completely anonymised and aggregated, i.e. only recognisable as a group value. This means that no conclusions can be drawn about individuals or individual movement profiles. The provisions of the Swiss Data Protection Act and the ethical principles that Swisscom follows in the use of data are complied with in full.

To learn more, please visit http://swisscom.ch/mip

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