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_name_24 (lowest INTEGER, average INTEGER)
### Question:
What is the lowest attendance for a stadium that has an average smaller than 307?
### Answer:
SELECT AVG(lowest) FROM table_name_24 WHERE average < 307