Tables 190 (cowc/Krfei), ^91. 



TABLE 190 (concluded). — Relative Humidity. 

 (Data from 20° to 60° C. based upon Table 185). 



189 



TABLE 191. — Relative Humidity. 



This table gives the relative humidity direct from the difference between the reading of the dry (t° C.) and the wet 

 (ti ° C.) thermometer. It is computed for a barometer reading; of 76 cm. The wet thermometer should be ventilated 

 about 3 meters per second. From manuscript tables computed at the U.S. Weather Bureau. 



Smithsonian Tables. 



