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%