CONTENTS Vll 



Table Page 



49. Factors for computing the relation between geopotential and geo- 



metric height 219 



50. Geometric meters to geopotential meters 220 



51. Geopotential meters to geometric meters 222 



52. Geopotential computations 224 



53-56. Thickness and mean adjusted virtual temperature of strata be- 

 tween standard isobaric surfaces (explanation) 241 



53. Thickness in geopotential meters of strata between standard isobaric 



surfaces as a function of mean adjusted virtual temperature. . 242 



54. Thickness in geopotential feet of strata between standard isobaric 



surfaces as a function of mean adjusted virtual temperature. . 248 



55. Mean adjusted virtual temperature between standard isobaric sur- 



faces as a function of thickness in geopotential meters 254 



56. Mean adjusted virtual temperature between standard isobaric sur- 



faces as a function of thickness in geopotential feet 255 



57-62. Relation between pressure change and geopotential change (ex- 

 planation) 256 



57. Change in height (geopotential meters) corresponding to 1 millibar 



change in pressure 257 



58. Change in height (geopotential feet) corresponding to 1 millibar 



change in pressure 258 



59. Change in height (geopotential feet) corresponding to a change in 



pressure of one-tenth of an inch of mercury 259 



60. Change in pressure (millibars) corresponding to a change in height 



of 10 geopotential meters 260 



61. Change in pressure (millibars) corresponding to a change in height 



of 10 geopotential feet 261 



62. Change in pressure (inches of mercury) corresponding to a change 



in height of 10 geopotential feet 262 



Section V. STANDARD ATMOSPHERE AND ALTIMETRY TABLES 



63. NACA standard atmosphere, lower atmosphere 265 



64. ICAN standard atmosphere 268 



65. Altimeter setting computation factors 269 



66. NACA standard atmosphere altitude-pressure table 273 



67. Correction of altimeter readings for mean temperature of the air 



column 274 



68. NACA standard atmosphere, tentative properties of the upper at- 



mosphere 280 



69. Density-altitude diagram 285 



