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_10815352_1 (average_attendance INTEGER, season VARCHAR)
### Question:
What's the average attendance of the leagues in the season of 2013?
### Answer:
SELECT MIN(average_attendance) FROM table_10815352_1 WHERE season = "2013"