“@BeijingAir: 11-15-2014 22:00; PM2.5; 261.0; 311; Hazardous (at 24-hour exposure at this level)” > 
11-15-2014 22:00; PM2.5; 261.0; 311; Hazardous (at 24-hour exposure at this level)
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#heatwatch RT@sanverde: “@BeijingAir: 11-15-2014 22:00; PM2.5; 261.0; 311; Hazardous (at 24-hour exposure at this level)” >
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