It will include altitudes including the initial cruise altitude. The plateau has an average altitude of . This is important in the acclimatization to high altitude. The average altitude above sea level is . He achieved a new height record of in level flight and a maximum altitude. Temperatures fall by for every rise in altitude. Maximum speed is at a maximum altitude of . The helicopter climbed to an altitude of amsl. Cooper achieved an altitude of at apogee. Virgin projects research flights with a peak altitude of . Treatment is generally by descending to a lower altitude and sufficient fluids. The last recorded altitude of the aircraft was . Its maximum cruise altitude is FL 450. The greater the altitude, the lower the pressure. The valley has an average altitude of .