Use the relative humidity table and the data to answer the question.


On March 23, the psychrometer reading was:


dry-bulb thermometer: 16°C


wet-bulb thermometer: 7°C


What is the relative humidity for March 23?


A. 89%


B. 44%


C. 42%


D. 19%



Difference between dry bulb

and wet bulb temperatures

Relative humidity
None 100%
0.5° 96%
1.0° 93%
1.5° 89%
9.0° 44%
9.5° 42%
14.5° 19%
15.0° 17%
18.0° 5%