As part of a screening process, computer chips must be operated in an oven at 125 °C. At the end of the cycle, the oven must be cooled before the chips can be removed. Ten minutes after starting cool-down, the temperature is 66 °C. After 15 minutes, the temperature is 36.5 °C. What will the temperature be after 16.5 minutes? Round the answer to the nearest tenth of a degree.