Even more terrible than "unhealthy" ... QT @BeijingAir: 10-03-2012 04:00; PM2.5; 252.0; 302; Hazardous (at 24-hour exposure at this level)
10-03-2012 04:00; PM2.5; 252.0; 302; Hazardous (at 24-hour exposure at this level)
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