From what I understand, there are three "interview time slots" per day. The actual number of people interviewed depends on how many interview committees they can get. For example, on my interview day, there were three committees, so at each interview slot each committee interviewed one person. Three committees, three time slots = nine people total. One of my friends who interviewed a few weeks ago, however, told me that they only had once committee of interviewers, so only three interviewees were in the group. Hope that clears something up!