SELECT "Avg seek time [ms]" FROM table_71289 WHERE "Device" < '3231'
What is the avg seek time for a device that is less than 3231?
CREATE TABLE table_71289 (
    "Device" real,
    "Device type" text,
    "Capacity [MB]" text,
    "Avg seek time [ms]" text,
    "Avg rotational delay [ms]" real,
    "Avg transfer rate [kB/s]" real
)