I don't know but as written it should be a matter I'd like to see changed soon. If you have a defeat in the TV game your medium lvl of attendance will be lower that in case of victory. For a team like mine there is not a lot of difference but with big arena the economy will suffer more. Go back to your question the fans take in consideration only your LAST TV match, so if you win your average will be "good" till the next TV live.
For me BBs should cancel the TV live as parameter for the attendance, first because your opponent is decided by "random", second because the match itself has a random inside. Then the attendance should be calculated week by week and not match by match.
1990-2022 Stalinorgel - https://www.youtube.com/watch?v=pV-Xppl6h8Et