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_22347090_4 (no_in_series INTEGER, us_viewers__million_ VARCHAR)
### Question:
Which series number had 1.98 million viewers?
### Answer:
SELECT MIN(no_in_series) FROM table_22347090_4 WHERE us_viewers__million_ = "1.98"