Table 112 (concluded) 

 VELOCITY OF SOUND IN AIR 



393 



Table 112A. — Velocity of sound in dry air as a function of temperature, according to 



classical theory 



Temp. 12 3 4 5 6 7 8 9 



°C. m. sec. -1 m. sec. -1 m. sec. -1 m. sec. -1 m. sec. -1 m. sec. -1 m. sec. -1 m. sec. -1 m. sec. -1 m. sec. -1 



60 366.05 366.60 367.14 367.69 368.24 368.78 369.33 369.87 370.42 370.96 



50 360.51 361.07 361.62 362.18 362.74 363.29 363.84 364.39 364.95 365.50 



40 354.89 355.46 356.02 356.58 357.15 357.71 358.27 358.83 359.39 359.95 



30 349.18 349.75 350.33 350.90 351.47 352.04 352.62 353.19 353.75 354.32 



20 343.37 343.95 344.54 345.12 345.70 346.29 346.87 347.44 348.02 348.60 



10 337.46 338.06 338.65 339.25 339.84 340.43 341.02 341.61 342.20 342.78 



331.45 332.06 332.66 333.27 333.S7 334.47 335.07 335.67 336.27 336.87 



- 331.45 330.84 330.23 329.62 329.01 328.40 327.79 327.18 326.56 325.94 



-10 325.33 324.71 324.09 323.47 322.84 322.22 321.60 320.97 320.34 319.72 



-20 319.09 318.45 317.82 317.19 316.55 315.92 315.28 314.64 314.00 313.36 



-30 312.72 312.08 311.43 310.78 310.14 409.49 308.84 308.19 307.53 306.88 



-40 306.22 305.56 304.91 304.25 303.58 302.92 302.26 301.59 300.92 300.25 



-50 299.58 298.91 298.24 297.56 296.89 296.21 295.53 294.85 294.16 293.48 



-60 292.79 292.11 291.42 290.73 290.03 289.34 288.64 287.95 287.25 286.55 



-70 285.84 285.14 284.43 283.73 283.02 282.30 281.59 280.88 280.16 279.44 



-80 278.72 278.00 277.27 276.55 275.82 275.09 274.36 273.62 272.89 272.15 



-90 271.41 270.67 269.92 269.18 268.43 267.68 266.93 266.17 265.42 264.66 



Table 112B. — Virial and interaction coefficients of dry air and water vapor 



The following table gives the virial and interaction coefficients involved in equation 

 (8), where the data are based on the Goff-Gratch 8,3 formulation: 



* Probable errors exceed half the computed values at lower temperatures. 



SMITHSONIAN METEOROLOGICAL TABLES 



