You want to pretend daily fluctuation occured and sometimes they got less and other times they got more? Does it matter. Dosimeters measure accumulated dose. Where are we going with this?
I'm not pretending anything, and of course it matters. On one mission your dosimetry will be above the average and on another mission your dosimetry will be below the average. That's the problem with your argument of citing an average dose taken with one detector over many months or years, and then trying to compare dosimetry that is taken over a few days with a completely different detection technique or placement of a detector. It's apple and pears whatever you do.
If you look at the CRaTER data, or even your precious graph, you'd find that fluctuations occur on a daily basis. See those big spikes, that correspond to the SPEs. They might tell you that there are variations. If you understood ExCel, you'd see the thickness of the line is an artefact of plotting over 60 000 varying data points. So yes, the GCR data does vary on a daily basis.
The GCR flux is not constant. It varies slightly daily within a cycle, and is strongly modulated over a single cycle, with further modulation over numerous cycles.
Do you understand the term integrated flux? That was the purpose of the 1 1 1 1 1 2 2 2 2 2 3 3 3 3 3 example.
I defer this to Jay, if he wishes to enter the fray again, and he can offer you the same insight that he offered Jarrah White. He's better at explaining it than I.