Table: episodes_data_6
Columns: no_in_series
title
directed_by
written_by
original_air_date
u_s_viewers_million

Question: What is every original air date with U.S. viewers of 0.23 million?
SQL: SELECT "original_air_date" FROM episodes_data_6 WHERE "u_s_viewers_million" = '0.23'

Question: What is the lowest number in series when U.S. viewers is 0.23 million?
SQL: SELECT MIN("no_in_series") FROM episodes_data_6 WHERE "u_s_viewers_million" = '0.23'