Figure 2
From: Measuring economic activity in China with mobile big data
Measuring employment changes at the company/zone level. We study four typical cases, Firm I (A) and Firm II (B) announced mass layoffs, and Zone III (D) and Firm IV (E) experienced rapid growth. The normalized employee data are shown in (C) and (F). The closing times for Firms I and II are marked by the grey bar in (C). Remote sensing images were derived from Baidu Maps.