CREATE TABLE table_42200 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

Which attendance number was taken in a week less than 16 when the Washington Redskins were the opponents?
SELECT "Attendance" FROM table_42200 WHERE "Week" < '16' AND "Opponent" = 'washington redskins'
SELECT "Attendance" FROM "table_42200" WHERE "Opponent" = 'washington redskins' AND "Week" < '16'