“@BeijingAir: 09-06-2014 15:00; PM2.5; 127.0; 188; Unhealthy (at 24-hour exposure at this level)”.. Yep.. #pollution #China
09-06-2014 15:00; PM2.5; 127.0; 188; Unhealthy (at 24-hour exposure at this level)
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