What does HNL stand for?
HNL stands for "Hourly Noise Level"
How to abbreviate "Hourly Noise Level"?
"Hourly Noise Level" can be abbreviated as HNL
What is the meaning of HNL abbreviation?
The meaning of HNL abbreviation is "Hourly Noise Level"
What does HNL mean?
HNL as abbreviation means "Hourly Noise Level"
