Changes have been made to Infrared Global Geostationary Composite data: http://dx.doi.org/10.5067/GHRC/MULTIPLE/DATA201.
The main revision is that the incorporation of GOES-16 data has modified the resolution of this data from 14km to 4 km. The change in resolution results in larger files. The files changed size on December 18, 2017. The updated guide provides more information.
