Definitions of fields in Store Reports

Hi
Where would I find definitions, or data dictionary, of the fields contained in the Store Reports, from https://dev.epicgames.com/portal/en-US/futurlab/store/reports? I was looking to confirm, for example, what the Adjusted Base Revenue consists of, and the format of the Sale Day date. (For clarity, I’ve not yet published my game to the store so don’t have live data yet. However, I want to check the fields to prep my sales reporting process in readiness)
Thanks