Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_19068566_1 (production_code VARCHAR, us_viewers__million_ VARCHAR)
### Question:
When there are  3.39 million u.s viewers what is the production code?
### Answer:
SELECT production_code FROM table_19068566_1 WHERE us_viewers__million_ = "3.39"