FWIW.
Well, this is weird. In less than a month, a huge drop in atmospheric CO2 measured at same location by same scientists. I have never seen such a big move in less than a month.
Keeling curve, Mauna Loa, July 5, 2018, July 26 reading:
Keeling curve, Mauna Loa, July 5, 2018, July 5 reading:

