[[1517616000, 1] ,[1517702400, 1] ,[1517788800, 3] ,[1517875200, 5] ,[1517961600, 2] ,[1518048000, 2] ,[1518134400, 2] ,[1518220800, 4] ,[1518393600, 3] ,[1518480000, 1] ,[1518739200, 1] ,[1518825600, 1] ,[1518912000, 3] ,[1518998400, 4] ,[1519084800, 7] ,[1519171200, 5] ,[1519257600, 4] ,[1519344000, 3] ,[1519430400, 3] ,[1519516800, 7] ,[1519689600, 6] ,[1519776000, 1]