Question: What is the average Attendance, when the Date is September 17, 1981?
SQL: SELECT AVG("Attendance") FROM "2-16677990-2" WHERE "Date" = 'September 17, 1981';

Question: What is the Attendance, when the Opponent is the Tampa Bay Buccaneers?
SQL: SELECT "Attendance" FROM "2-16677990-2" WHERE "Opponent" = 'Tampa Bay Buccaneers';