Here's the numbers with games against the Big 6 (Colorado, Texas, Oregon, USC, Washington, Oklahoma) removed and replaced by the average draw for 'other' games.
https://www.cougarboard.com/board/message.html?id=32112714
Note that if a game against one of these teams was on an unrated station (PAC12 Network or ESPN+), I didn't replace it with their average against other teams, but left it a zero, presuming it would still be on an unrated network