What is "mg"? Can we log it?

[limited cv8r]

Wondering what "mg" is and can we log it?
Pic attached.

[joecar]

My understanding is that "mg" is cylinder airmass in milligrams instead of the usual grams... but I may be wrong.

[GMPX]

Joe is right, but I have no idea why GM chose to rescale the air flow values used in the knock routines, but they did. They literally take the normal g/cyl value and convert to mg.
We can't log it, but just put a decimal point in front of the value and that is your normal g/cyl value.