Table: tv_episode_viewers_7
Columns: no_overall
no_for_series
title
directed_by
written_by
original_air_date
uk_viewers_million

Question: How many directed by entries have UK viewership over 6.16 million?
SQL: SELECT COUNT("directed_by") FROM tv_episode_viewers_7 WHERE "uk_viewers_million" = '6.16'

Question: Who directed the episode with a UK viewership of exactly 5.77 million?
SQL: SELECT "directed_by" FROM tv_episode_viewers_7 WHERE "uk_viewers_million" = '5.77'

Question: What was the airdate of the episode with a UK viewership of 6.02 million?
SQL: SELECT "original_air_date" FROM tv_episode_viewers_7 WHERE "uk_viewers_million" = '6.02'

Question: Who directed the episode with UK viewership of 6.09 million?
SQL: SELECT "directed_by" FROM tv_episode_viewers_7 WHERE "uk_viewers_million" = '6.09'