CREATE TABLE table_48925 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Attendance" CLOB)

Which Week has a Date of december 8, 1991?
SELECT AVG("Week") FROM table_48925 WHERE "Date" = 'december 8, 1991'
SELECT AVG("Week") FROM "table_48925" WHERE "Date" = 'december 8, 1991'