Nielsen Twitter TV Ratings Weekly Top Ten list is ranked by Unique Audience and include four metrics for each of the top episodes.
- Tweets - Tweets ascribed to a linear TV episode.
- Unique Authors – Unique Twitter accounts that have sent at least one Tweet ascribed to a specific TV episode.
- Impressions - The number of times any Tweets ascribed to a TV episode were seen.
- Unique Audience – The total number of distinct Twitter accounts accruing at least one impression of one or more different Tweets ascribed to a TV episode.