[[1549836000, 2]
,[1549839600, 1]
,[1549846800, 1]
,[1549850400, 1]
,[1549861200, 1]
,[1549864800, 1]
,[1549868400, 1]
,[1549875600, 1]
,[1549879200, 2]
,[1549882800, 1]
,[1549890000, 2]
,[1549893600, 3]
,[1549897200, 1]
,[1549900800, 2]
,[1549908000, 1]
,[1549915200, 1]