A4-2 ADIABATIC CHART 
NOTE: Table 7in §A4-1.1refersto the Radiosonde Observation Compu- 
tation Tables (WBAN), January 1966 edition. To determine which table 
a reference is referring to, note the digit after the word table. If a letter 
follows the word ''table,"' it will be found in this Handbook, otherwise it 
will be found in the Radiosonde Observation Computation Tables (WBAN). 
The following is a list of tables andtitles of the Radiosonde Observation 
Computation Tables (WBAN). 
Table 
Number Title Page 
1. Conversion Table for Wind Speed---------------------- IL 
2. Fahrenheit to Celsius Temperatures------------------- 2 
3. Conversion Tables for Inches and Millibars- - ---------- 6 
4, Relative Humidity (%), Celsius Temperatures----------- 8 
5. Dew Point Computations------------------------------ 13 
6. Distances From a Surface of Given Pressure to a 
Standard Isobaric Surface------------------ - --------- 20 
7. Distance Between Standard Isobaric Surfaces---- ------- Zk 
8. Distances From a Standard Isobaric Surface to a 
Surface of Given Pressure---------------------------- 26 
9. Determination of Heights by the Barometer------------- 29 
10. Table of Temperature Correction (for reduction of 
pressures to 1000 mb.)-----=------------------------- 37 
11. Table of Z for Computing Altitude of the 1000 mb. 
Constant-Pressure Surface----- ---------------------- 38 
12. Table of Temperature Correction (for reduction of 
pressures to 850 mb.)--------+----5------+-+--- +> 2----- 50 
13. Table of Z for Computing the Altitude of the 850 mb. 
Constant- Pressure Surface--------------------------- o1 
14. Proportional Parts-----------+------+------------------ 57 
15. Mean Values of Relative Humidity (over water) When 
Electric Hygrometer is Below its Operating Range------- 64 
16. Altitudes in Hundreds of Geopotential Feet as a 
Function of Pressure in Millibars---------------------- 65 
17. Distance From the 1099-mb Surface to a Surface of 
Given Pressure-------<----------<-- s- --55295-555------ 67 
18. Temperature Correction (for table 17)------- - -- - ------ 67 
= Ik 8) FMH#3 
