Fig. 9
From: Universal scaling of human flow remain unchanged during the COVID-19 pandemic
The structure of basins in the year 2016. a, The size of the basin increases in proportion to the diameter to the 1.5th power. The definition of diameter is basin crossing, see the paper Shida et al. (2020). b, The number of moving people in the basin is proportional to the cube of the diameter. c, Based on the square with the highest density of moving people in the basin, the number of moving people decreases to the power of \(-0.5\)