Gross Rating Point.
Cumulative audience rating: the sum of ratings for each commercial airing. Higher values are considered to indicate greater advertising effectiveness.
Example: an audience rating of20% for3airings, and an audience rating of10% for5airings ofcommercialsare broadcast
（20×3）＋（10×5）＝110 GRP
Related terms:Infomercial／Caravan-Style Infomercial／Sponsored-Program Commercial／Spot Commercial