Daily performance

I don't know how feasible this is but would it be possible to calculate a daily performance based from the days results?

I can do that for the last 7 days using the Activity information that you see in the profile. How would you see this working, @marinkatomb ? And how would it be different from the Activity feed in the profile?

I imagined it to be the same as the performance you see in Swiss tournaments. Say I play 5 blitz games, it displays the performance for those 5 games in the activity feed. If I play some bullet, then that has its own performance also. I can understand why the site doesn't do this by default as it would require a lot of compute but perhaps it can be calculated locally?

I have never played in a Swiss tournament. Can you paste some images?