From a press release issued by FGSport Group:

World Superbike Championship 2004
Round 3 Misano Adriatico 16-18 June 2004


ATTENDANCE

The third round of the Superbike World Championship in Misano Italy, attracted an attendance of 45,000 people over the three days of the event.

The organizers were satisfied with this figure, despite the fact that unseasonable bad weather and rain undoubtedly kept fans at home.