What stands out to me are how the lines for Ohio St. and Michigan track each other almost perfectly since 2006, with us unfortunately just a step behind. Stupid fluke personal foul penalty. EDIT: actually, I looked again and it's 2008 when the M and OSU lines start to track each other, after M's preciptous dip in the 2007 recruiting class. Stupid late Carr-era recruiting woes.
I also find it noteworthy that Nebraska posted its best recruiting average in 2011--the year they joined the B1G--and have two consecutive declining years with another slow start in 2014. I wonder if their historical norm will start looking more like Iowa's or Wisconsin's?
Holy fluctuation, Penn State.