what were the different opponents in 1971?
smu*, at pittsburgh*, #17 usc*, vs. #3 texas*, #6 colorado, at kansas state, iowa state, at missouri, kansas, #1 nebraska, at oklahoma state, vs. #5 auburn*
what were the different attendance numbers for the games?
53,545, 34,916, 62,351, 72,032, 62,501, 37,198, 60,477, 55,098, 54,347, 62,884, 36,571, 84,031
which, of these, what was the attendance value for the game against auburn?
84,031