Fig. 3
From: Using Google Location History data to quantify fine-scale human mobility
Location information available at different spatial scales from the a GLH, b GPS, c simulated mobile phone data, and d survey data collected during this study. c Mobile phone data shown here were simulated using the GLH data, assuming each GLH location point was a call or text event routed through the nearest cell tower. In the simulated mobile phone data, polygons represent Voronoi polygons drawn around cell towers from the OpenCellID dataset, and are colored red if any simulated call/text events were routed through the associated tower