user: ### NOW ANSWER:
Question: What is the lowest attendance for a stadium that has an average smaller than 307?
Columns: ['Team', 'Stadium', 'Capacity', 'Highest', 'Lowest', 'Average']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['East Fife', 'Bayview Stadium', 2000.0, 1300.0, 540.0, 769.0]
SQL:

assistant: SELECT AVG("Lowest") FROM "Table" WHERE "Average" < 307.0;