This report was prepared as part of the fight against the new coronavirus pandemic, initially covering 131 countries, including Portugal, using aggregated and anonymous data to map movement trends.

The data, which report for 29 March, compare with the median value for the corresponding day of the week during the period between 3 January and 6 February, before the covid-19 pandemic was declared.

Mobility trends for places like restaurants, cafes, shopping centres, theme parks, museums, bookstores and cinemas (retail and recreation) fell by 83 percent in Portugal, with movements close to grocery stores and pharmacies falling 59 percent.

The movement in transport stations (buses, trains, metro) decreased by 78 percent and mobility in national parks, beaches, marinas and public gardens decreased by 80 percent.

Mobility recorded with workplaces fell 53 percent and with residential areas rose 22 percent, according to the report.

"Google has prepared this report to help you and public health officials understand the responses to covid-19-related social detachment indications. This report should not be used for medical diagnosis, prognosis or treatment purposes ", says the technology, pointing out that it is also not intended to be used to plan personal trips.

In regional terms, the district of Aveiro, which includes the municipality of Ovar, where the Government declared on 17 March the state of public calamity, movements in the retail and recreation areas decreased by 83 percent and in the grocery and pharmacy areas decreased 61 percent, according to the Google report.

The movement in national parks, beaches, marinas, public gardens (parks) fell 84 percent and in transport stations decreased 83 percent.

Mobility in the district of Aveiro in residential areas rose 24 percent and decreased 53 percent in the workplace.

In the case of the Azores, the report points out that in the retail and recreation category, the movement of people decreased by 83 percent, in the grocery store and pharmacy it decreased by 56 percent and in transport stations 87 percent. The movement in the residential areas rose 18 percent.

In Madeira, the movement in retail and recreation areas decreased by 89 percent, registering a drop of 63 percent in areas with grocery and pharmacy. In the parks category, there was a decrease of 86 percent in mobility, while in transport stations the decrease was 77 percent in the period under analysis.

The movement in the workplace decreased by 60 percent and in the residential areas, the increase was 27 percent.

In the Lisbon district, the report points to an 84 percent decrease in the retail and recreation category and a 58 percent drop in the grocery and pharmacy ‘items’. In transport stations, the movement of people fell 79 percent, in parks it dropped 82 percent and in workplaces 56 percent. Mobility in residential areas rose by 22 percent.

In Porto and Faro, the movement of people decreased in all categories, except in the residential area, which rose 23 percent in both districts.

In the retail and recreation category, the reduction in mobility was 84 percent ??in Porto and 83 percent in Faro, with transport stations registering a decrease in the number of people circulating by 79 percent and 82 percent, respectively.

"The reports show trends for several weeks with the most recent data representing two to three days earlier, which is the time it takes to produce" these documents, says Google.

The data included in these calculations, says the technology, depends on the settings, connectivity and if the privacy criteria are met.

"We include categories that are useful for social distance efforts as well as access to essential services," says the company, noting that the data is obtained through data from users who have chosen to have their location linked to their Google account.

"Like all samples, this may or may not represent the exact behaviour of a larger population," he concludes.