CREATE TABLE table_48725 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" FLOAT)

What was the lowest attendance when the Green Bay Packers played?
SELECT MIN("Attendance") FROM table_48725 WHERE "Opponent" = 'green bay packers'
SELECT MIN("Attendance") FROM "table_48725" WHERE "Opponent" = 'green bay packers'