CREATE TABLE table_53399 ("Date" CLOB, "Opponent" CLOB, "Score" CLOB, "Loss" CLOB, "Attendance" FLOAT, "Record" CLOB)

What was the attendance on July 30?
SELECT AVG("Attendance") FROM table_53399 WHERE "Date" = 'july 30'
SELECT AVG("Attendance") FROM "table_53399" WHERE "Date" = 'july 30'