[[1517720400, 1]
,[1517724000, 3]
,[1517727600, 1]
,[1517734800, 3]
,[1517738400, 1]
,[1517742000, 1]
,[1517745600, 5]
,[1517749200, 1]
,[1517752800, 1]
,[1517774400, 2]
,[1517778000, 4]
,[1517781600, 2]