[[1501466400, 1] ,[1501473600, 1] ,[1501477200, 1] ,[1501480800, 5] ,[1501484400, 9] ,[1501488000, 11] ,[1501491600, 20] ,[1501495200, 7] ,[1501498800, 20] ,[1501502400, 2] ,[1501506000, 9] ,[1501509600, 21] ,[1501513200, 27] ,[1501516800, 48] ,[1501520400, 46] ,[1501524000, 28] ,[1501527600, 31] ,[1501531200, 25] ,[1501534800, 11] ,[1501538400, 5]