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. 2021 Jan 7;16(1):e0245051. doi: 10.1371/journal.pone.0245051

Fig 2. Airway connections in March and April of 2020 at São Paulo State, Brazil.

Fig 2

Red (March month) and orange (April month) colors show airport connections among different cities of São Paulo, as well as among São Paulo State and other states in Brazil or other countries. Line thickness is proportional to the number of passengers moving from one city to another. The map was made using the software QGIS 3.10.