To be honest I am a little disappointed by the "overall" procedure of the TV ratings, since technically a show that has 3-4 episodes, can easily do better than a show with 5-6 episode. Especially this season many shows suddenly paused after having gotten insane ratings thanks to the mayors annoucement. For me, who has 6 episodes, it means those shows aren't dragged down by the following weeks so much, because they simply have less episodes. Eventually writing 6 episodes backfired for me now. And i think this is neither wanted nor fair. I would say the new estimating of the Top Ten should simply be counting all the ratings, like:
Week 1: 9.2
Week 2: 10.5
9.2 + 10.5 = 19.7
The one with the highest number wins. This way its ensured that people, who write more episodes get better positions.