Mean attendance for December 22, 1980?
CREATE TABLE table_name_91 (attendance INTEGER, date VARCHAR)
SELECT AVG(attendance) FROM table_name_91 WHERE date = "december 22, 1980"
### Context: CREATE TABLE table_name_91 (attendance INTEGER, date VARCHAR) ### Question: Mean attendance for December 22, 1980? ### Answer: SELECT AVG(attendance) FROM table_name_91 WHERE date = "december 22, 1980"