Wikipedia has attendance for most of the games. Extra Preliminary Round: Original Games: Mean of 105.3, Median of 87 Replays: Mean of 99.1, Median of 86 All Games: Mean of 104.2, Median of 87 In matchups with replays where Wikipeida has the attendance for both games, the first game got higher attendance 10 times and the replay got higher attendance 12 times. The replays had a higher mean attendance, 104.5 to 104.3. Out of the 8 matchups with replays between a Level 9 club and a Level 10 club, the Level 9 club got higher attendance 3 times and the Level 10 club got higher attendance 5 times. Games hosted by Level 10 clubs had a mean of 99.9 and a median of 85. Games hosted by Level 9 clubs had a mean of 105.5 and a median of 87. I hope to update this topic for the whole tournament.
Preliminary Round: Original Games: Mean of 144.8, Median of 118.5 (the middle two numbers were 117 and 120) Replays: Mean of 224.9, Median of 152 All Games: Mean of 158.2, Median of 125 Games hosted by Level 8 clubs: 67 games, Mean of 171.0 Median of 137 Games hosted by Level 9 clubs: 63 games, Mean of 141.9, Median of 120 Games hosted by Level 10 clubs: 19 games, Mean of 166.9, Median of 103