The info on M:I in TATV is negligible and essentially worthless. Makes sense since Cushman seems to have been focusing on the nights TOS actually aired and not the weeks overall. M:I aired on Saturday nights in 1966/67 and so wasn't in direct competition with Star Trek. And from looking around it doesn't look like M:I became a Top 30 or 20 show until it's third season, although I could be wrong. Would it be possible to get more info from the old Daily Variety issues?