Only big ten games.
http://www.bigten.org/sports/m-footbl/stats/2011-2012/confonly.html
SCORING DEFENSE G TD FG XPT 2XP DXP Saf Points Avg/G
1. Penn State 4 6 5 4 0 0 0 55 13.8
2. Ohio State 3 6 3 6 0 0 0 51 17.0
3. Michigan 3 7 1 7 0 0 0 52 17.3
Michigan State 3 7 1 7 0 0 0 52 17.3
5. Purdue 3 6 4 6 0 0 0 54 18.0
6. Wisconsin 3 8 1 6 1 0 1 61 20.3
7. Iowa 3 8 4 8 0 0 0 68 22.7
8. Illinois 4 12 3 12 0 0 0 93 23.2
9. Nebraska 3 12 2 11 0 0 0 89 29.7
10. Northwestern 4 20 5 18 1 0 0 155 38.8
11. Indiana 4 21 5 20 0 0 0 161 40.2
12. Minnesota 3 18 6 18 0 0 0 144 48.0
TOTAL DEFENSE G Rush Pass Plays Yards Avg/P TD Avg/G
1. Michigan State 3 337 534 193 871 4.5 7 290.3
2. Illinois 4 589 574 267 1163 4.4 11 290.8
3. Penn State 4 412 847 279 1259 4.5 6 314.8
4. Purdue 3 403 543 201 946 4.7 5 315.3
5. Michigan 3 393 555 180 948 5.3 6 316.0
6. Wisconsin 3 491 530 193 1021 5.3 7 340.3
7. Ohio State 3 419 610 205 1029 5.0 6 343.0
8. Nebraska 3 606 485 186 1091 5.9 12 363.7
9. Iowa 3 601 703 235 1304 5.5 8 434.7
10. Northwestern 4 613 1169 263 1782 6.8 19 445.5
11. Minnesota 3 926 541 226 1467 6.5 15 489.0
12. Indiana 4 1036 926 286 1962 6.9 18 490.5