Tabl£ 190. 

 RELATIVE HUMIDITY. 



187 



Vertical argument is the observed vapor pressure which may be computed from the wet and dry- 

 bulb readings through Table 188 or 189. The horizontal argument is the abserved air temperature 

 (dry-bulb reading). Based upon Table 43, p. 142, Smithsonian Meteorological Tables, 3d Revised 

 Edition, 1907. 



Smithspnian Tables. 



