[[1549494000, 2] ,[1549497600, 1] ,[1549504800, 1] ,[1549508400, 1] ,[1549512000, 1] ,[1549519200, 1] ,[1549522800, 2] ,[1549526400, 2] ,[1549537200, 2] ,[1549540800, 3] ,[1549544400, 1] ,[1549566000, 2]