TABLE 628.— STANDARD ATMOSPHERE 



593 



A standard atmosphere is defined by an altitude-temperature-pressure relation. It is an 

 aeronautic necessity in valuating the performance of airplanes and for the calibration of 

 instruments. The following standard has been officially adopted by the Army Air Corps, 

 National Bureau of Standards, National Advisory Committee for Aeronautics, and the 

 Weather Bureau. See Table 343. 



SMITHSONIAN PHYSICAL TABLES 



