[[1551484800, 4]
,[1551571200, 1]
,[1551657600, 2]
,[1551744000, 3]
,[1551916800, 2]
,[1552003200, 2]
,[1552089600, 2]
,[1552176000, 2]
,[1552262400, 1]
,[1552608000, 3]
,[1552780800, 1]
,[1552867200, 1]
,[1553040000, 5]
,[1553126400, 4]
,[1553212800, 2]
,[1553558400, 1]
,[1553731200, 4]
,[1553817600, 1]
,[1553904000, 1]
,[1553990400, 1]