Altitude Temperature (outside) Meters -10 to 0 0-10 10-20 20-30 30+ 0-1800 1.808 1.939 1.995 2.016 2.054 (BAR) 1800-2300 1.707 1.824 1.877 1.897 1.932 2300-3000 1.585 1.700 1.749 1.768 1.801 Best regards, Feico van der Laan