High Altitude Medicine and Physiology, John Burnard West, Robert B. Schoene, James S. Milledge, pp. 33, CRC Press, 2007, ISBN 9780340913444, ... On the Changthang (the northern part of the Tibetan plateau), which has an average height of 4900 m, there are few days when the temperature reaches as high as 10°C, and -25°C has been recorded ...