I knew it. around 300 today! @BeijingAir 03-31-2013 14:00; PM2.5; 251.0; 301; Hazardous (at 24-hour exposure at this level
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@AndersonHsieh I knew it. around 300 today!@BeijingAir 03-31-2013 14:00; PM2.5; 251.0; 301; Hazardous > Literally, saw this coming, too~ -
@sanverde@BeijingAir smell of something burning!
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