[[1548968400, 1]
,[1548975600, 2]
,[1548993600, 2]
,[1548997200, 1]
,[1549018800, 4]
,[1549022400, 2]
,[1549026000, 2]
,[1549029600, 1]
,[1549033200, 1]
,[1549036800, 2]
,[1549044000, 2]