Table: tv_episode_data_77
Columns: no_in_series
no_in_season
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_million

Question: How many viewers tuned in for season 2?
SQL: SELECT "u_s_viewers_million" FROM tv_episode_data_77 WHERE "no_in_season" = 2

Question: Who directed the episode that has 3x6752 listed as the production code?
SQL: SELECT "directed_by" FROM tv_episode_data_77 WHERE "production_code" = '3X6752'

Question: Which series number had 1.98 million viewers?
SQL: SELECT MIN("no_in_series") FROM tv_episode_data_77 WHERE "u_s_viewers_million" = '1.98'