Figure 3From: Measuring economic activity in China with mobile big data Employment index for industrial parks. (A) The grey line shows the overall trend among all 2,000 industrial parks, which is relatively steady with a slow decline. The blue line, which represents the result for approximately 1,000 manufacturing industrial parks, shows a sustained and more obvious downward trend; the red line, which represents the result for approximately 1,000 high-tech parks, shows healthy growth. (B) Monthly year-over-year growth rate. January and February are aggregated together to remove the influence of the Spring Festival holiday, which falls in a different time period in January or February every year.Back to article page