What was the average finish when the average start was 18.4?
CREATE TABLE table_1507423_4 (avg_finish VARCHAR, avg_start VARCHAR)
SELECT avg_finish FROM table_1507423_4 WHERE avg_start = "18.4"
### Context: CREATE TABLE table_1507423_4 (avg_finish VARCHAR, avg_start VARCHAR) ### Question: What was the average finish when the average start was 18.4? ### Answer: SELECT avg_finish FROM table_1507423_4 WHERE avg_start = "18.4"