With 10 degrees c per minute Then reduce the temperature down from 200 to-50 quickly. Slower increases in temperature from-50 to 200 with the 10 degree Celsius per minute. Repeat twice
With a rate of 10 degrees per minute , then reduce temperature from -50 to 200 rapid increase of the temperature from -50 to 200 ° C at a rate of 10 per minute, repeating the second round.