If you go to the download page for " ERA5-Land monthly averaged data from 1950 to present" then there is an option to select “Monthly averaged reanalysis by hour of day” shown below —
So I assume this data is part of this dataset. But, my problem is that this download option does not appear to produce what it says. Maybe this data isn’t actually present — if this is the case, the download option should be removed to avoid confusion.
I still have not resolved this issue! Thanks