The first five days of “March Madness” college basketball have seen rising ratings and slightly lower national TV advertising exposure and spending versus a year ago. There have been 5,140 airings of TV ads on CBS, TNT, TBA and truTV, totaling $409.3 million in national TV revenue spent, according to iSpot.tv. A year ago, it was $428.4 million for 5,347 airings.
