It is hard numbers for Fri/Sat/Sun.
Regional 3rd party trackers (NPD/MC/etc.) track weekly data either Sun-Sat or Mon-Sun. Nintendo has received this data (for the week ending 1/29/22), plugged in their own data to fill in gaps in regions where 3rd party tracking is unavailable, and added in their internal digital sell-through (through Sun 1/29/22) to come up with this figure.
No tracking outlet would have figures for the week ending 2/6/22 yet (the current week), since that week is still being actively tracked.
Same logic applies to all of these (except Capcom/Koei's figures, they are providing their internal shipped+digital sales, but through the same timeframe - Sunday after launch):