[[1552176000, 1]
,[1552186800, 1]
,[1552194000, 1]
,[1552197600, 2]
,[1552201200, 1]
,[1552204800, 1]
,[1552208400, 3]
,[1552215600, 3]
,[1552222800, 1]
,[1552230000, 1]
,[1552233600, 3]
,[1552237200, 2]
,[1552248000, 1]