[[1499749200, 1]
,[1499756400, 1]
,[1499760000, 1]
,[1499770800, 2]
,[1499774400, 1]
,[1499778000, 2]
,[1499781600, 1]
,[1499785200, 2]
,[1499788800, 4]
,[1499792400, 4]
,[1499796000, 2]
,[1499799600, 1]
,[1499803200, 1]
,[1499806800, 3]
,[1499810400, 1]