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  UPPER AIR REFERENCE CHART


PRESSURE
APPROX.HEIGHT
APPROX. TEMP.
Sea level
0 m or 0 ft
15C or 59F
1000 mb
100 m or 300 ft
15C or 59F
850 mb
1500 m or 5000 ft
5C or 41F
700 mb
3000 m or 10000 ft
-5C or 23F
500 mb
5000 m or 18000 ft
-20C or -4F
300 mb
9000 m or 30000 ft
-45C or -49F
200 mb
12000 m or 40000 ft
-55C or -67F
100 mb
16000 m or 53000 ft
-56C or -69F

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