Table: episodes_15
Columns: no
col
title
directed_by
written_by
original_air_date
production_code
u_s_viewers_million

Question: Name the number for viewers being 1.87
SQL: SELECT MAX("col") FROM episodes_15 WHERE "u_s_viewers_million" = '1.87'

Question: Name the production code for viewers for 1.69
SQL: SELECT "production_code" FROM episodes_15 WHERE "u_s_viewers_million" = '1.69'