I have exported data to CSV. Here is not null values. Where you see values < 0.01?
0.01,1530925860000,0
0.03,1530957060000,0
0.02,1530962520000,0
0.05,1530969900000,0
0.04,1530977220000,0
0.01,1530982740000,0
0.01,1531041420000,0
0.01,1531079940000,0
0.02,1531089120000,0
0.03,1531120260000,0
0.02,1531171620000,0
0.04,1531204680000,0
0.01,1531208340000,0
0.02,1531252320000,0
0.03,1531289040000,0
0.02,1531334880000,0
0.03,1531336680000,0
0.03,1531351380000,0
0.01,1531353240000,0
0.01,1531384380000,0
0.01,1530925860000,0
0.01,1531259700000,0