@BeijingAir how do you make your calculations? What unit do the figures match? Thanks! #environment #Beijing
10-05-2012 08:00; PM2.5; 24.0; 72; Moderate (at 24-hour exposure at this level)
-
-
Thanks. Twitter will use this to make your timeline better. UndoUndo
-
Loading seems to be taking a while.
Twitter may be over capacity or experiencing a momentary hiccup. Try again or visit Twitter Status for more information.