CREATE TABLE table_15210 ("Date" CLOB, "Visitor" CLOB, "Score" CLOB, "Home" CLOB, "Decision" CLOB, "Attendance" FLOAT, "Record" CLOB)

Record of 18 15 6 belongs to what lowest attendance?
SELECT MIN("Attendance") FROM table_15210 WHERE "Record" = '18–15–6'
SELECT MIN("Attendance") FROM "table_15210" WHERE "Record" = '18–15–6'