Fig. 1
From: Universal scaling of human flow remain unchanged during the COVID-19 pandemic
The population distribution of moving people in the morning around the Tokyo metropolitan area. a–c, Population distribution maps of moving people in the morning on weekdays in January (a), May (b), and October (c), where the predicted population is normalized to the actual population in Japan with color strength proportional to the number of moving people in the square. The total number of moving people in the morning (07:30–08:00) is 9,000,000 (January), 2,500,000 (May), 3,300,000 (October) in the Tokyo metropolitan area, whose population is 35,000,000 (Tokyo, Kanagawa, Saitama, Chiba). The gray lines in the map represent the railways